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University of Florida researchers are calling for a national transformation in how we address the ongoing epidemic of obesity and Type 2 diabetes, starting with a fundamental shift in how we approach health, agriculture and food. Published recently in the Proceedings of the National Academy of Sciences, the article argues that fruits and vegetables must be treated not just as food — but as medicine.  With 73% of U.S. adults and 35% of children classified as overweight or obese, the authors warn that the crisis is not only an individual health issue but a national economic and security threat.  Andrew Hanson, Ph.D., a co-author and professor of horticultural sciences at UF/IFAS, emphasized a sense of urgency and collective responsibility toward solving this health crisis.  “This isn’t business as usual. We’re taking a public-interest view. This is the kind of thing we all need to be talking about. It’s too important not to,” he said.  The article proposes a roadmap for change, including creating five National Institutes of Health-supported “Food Is Medicine” centers across the U.S., with Florida as a leading candidate; scaling up domestic fruit and vegetable production to meet national dietary needs; partnering with food producer and processors to make healthy foods more accessible, affordable and appealing; and reforming medical and nutrition education to include horticultural sciences and vice versa. The article highlights that only 1 in 10 adults meets the recommended daily intake of fruits and vegetables, and that U.S. production falls far short of what’s needed to support a healthy population. The authors call for a dramatic expansion of fruit and vegetable production, especially high-impact crops like berries, leafy greens and carrots.  Christopher Gunter, Ph.D., professor and chair of the UF/IFAS Department of Horticultural Sciences, said the team’s goal is to push the role fruit and vegetables crops can play in improving human health into the national consciousness. “As a discipline, horticulture and the science of fruit and vegetables have been largely ignored in this conversation,” Gunter said. “Our goal is to move the needle on health with fruit and vegetables.”   Hanson said about 80% of the nation’s cropland is used to grow soybeans, corn and wheat — most of which are processed into products with low nutritional value that contribute to the obesity and Type 2 diabetes epidemic.  Mike Jaffee, M.D., a co-author and professor of neurology in the UF College of Medicine, stressed the broader implications of a high-vegetable diet on brain health.  “Obesity and insulin resistance are linked to inflammation and neurodegeneration. We’re living longer, but our brains aren’t keeping up. That’s where the real cost to individuals and the health care system comes in,” he said.  Gunter agreed, adding, “This epidemic reduces the longevity and productivity of our citizens. It limits the momentum communities need to grow healthy and resilient families.”  Hanson pointed out that higher socioeconomic groups are better positioned to meet dietary recommendations, making this not just a health issue, but a deeply embedded social and economic one.  “This crisis takes an unduly large toll on people with lower incomes and less time. To eat enough fruits and vegetables in the current system, you need substantial income and time to prepare food. That’s a luxury many don’t have,” he said.  The authors argue that farmers bring essential knowledge to the table.   “They understand how environmental factors impact nutritional quality,” Gunter said.

A team of researchers, including Kevin Butler, Ph.D., a professor in the Department of Computer and Information Science and Engineering at the University of Florida, is sounding the alarm on a disturbing trend in artificial intelligence: the rapid rise of AI-generated sexually explicit images created without the subject’s consent. With funding from the National Science Foundation, Butler and colleagues from UF, Georgetown University and the University of Washington investigated a growing class of tools that allow users to generate realistic nude images from uploaded photos — tools that require little skill, cost virtually nothing and are largely unregulated. “Anybody can do this,” said Butler, director of the Florida Institute for Cybersecurity Research. “It’s done on the web, often anonymously, and there’s no meaningful enforcement of age or consent.” The team has coined the term SNEACI, short for synthetic non-consensual explicit AI-created imagery, to define this new category of abuse. The acronym, pronounced “sneaky,” highlights the secretive and deceptive nature of the practice. “SNEACI really typifies the fact that a lot of these are made without the knowledge of the potential victim and often in very sneaky ways,” said Patrick Traynor, a professor and associate chair of research in UF's Department of Computer and Information Science and Engineering and co-author of the paper. In their study, which will be presented at the upcoming USENIX Security Symposium this summer, the researchers conducted a systematic analysis of 20 AI “nudification” websites. These platforms allow users to upload an image, manipulate clothing, body shape and pose, and generate a sexually explicit photo — usually in seconds. Unlike traditional tools like Photoshop, these AI services remove nearly all barriers to entry, Butler said. “Photoshop requires skill, time and money,” he said. “These AI application websites are fast, cheap — from free to as little as six cents per image — and don’t require any expertise.” According to the team’s review, women are disproportionately targeted, but the technology can be used on anyone, including children. While the researchers did not test tools with images of minors due to legal and ethical constraints, they found “no technical safeguards preventing someone from doing so.” Only seven of the 20 sites they examined included terms of service that require image subjects to be over 18, and even fewer enforced any kind of user age verification. “Even when sites asked users to confirm they were over 18, there was no real validation,” Butler said. “It’s an unregulated environment.” The platforms operate with little transparency, using cryptocurrency for payments and hosting on mainstream cloud providers. Seven of the sites studied used Amazon Web Services, and 12 were supported by Cloudflare — legitimate services that inadvertently support these operations. “There’s a misconception that this kind of content lives on the dark web,” Butler said. “In reality, many of these tools are hosted on reputable platforms.” Butler’s team also found little to no information about how the sites store or use the generated images. “We couldn’t find out what the generators are doing with the images once they’re created” he said. “It doesn’t appear that any of this information is deleted.” High-profile cases have already brought attention to the issue. Celebrities such as Taylor Swift and Melania Trump have reportedly been victims of AI-generated non-consensual explicit images. Earlier this year, Trump voiced support for the Take It Down Act, which targets these types of abuses and was signed into law this week by President Donald Trump. But the impact extends beyond the famous. Butler cited a case in South Florida where a city councilwoman stepped down after fake explicit images of her — created using AI — were circulated online. “These images aren’t just created for amusement,” Butler said. “They’re used to embarrass, humiliate and even extort victims. The mental health toll can be devastating.” The researchers emphasized that the technology enabling these abuses was originally developed for beneficial purposes — such as enhancing computer vision or supporting academic research — and is often shared openly in the AI community. “There’s an emerging conversation in the machine learning community about whether some of these tools should be restricted,” Butler said. “We need to rethink how open-source technologies are shared and used.” Butler said the published paper — authored by student Cassidy Gibson, who was advised by Butler and Traynor and received her doctorate degree this month — is just the first step in their deeper investigation into the world of AI-powered nudification tools and an extension of the work they are doing at the Center for Privacy and Security for Marginalized Populations, or PRISM, an NSF-funded center housed at the UF Herbert Wertheim College of Engineering. Butler and Gibson recently met with U.S. Congresswoman Kat Cammack for a roundtable discussion on the growing spread of non-consensual imagery online. In a newsletter to constituents, Cammack, who serves on the House Energy and Commerce Committee, called the issue a major priority. She emphasized the need to understand how these images are created and their impact on the mental health of children, teens and adults, calling it “paramount to putting an end to this dangerous trend.” "As lawmakers take a closer look at these technologies, we want to give them technical insights that can help shape smarter regulation and push for more accountability from those involved," said Butler. “Our goal is to use our skills as cybersecurity researchers to address real-world problems and help people.”

The slimy algae topping Florida’s waterways are more than just unsightly. They are often toxic to humans, animals and the environment. To mitigate those risks, University of Florida researchers are collaborating with North Carolina State University and University of South Florida scientists on a next-day prediction model to warn and inform water managers about harmful algal blooms. The research is funded by two U.S. Army Corps of Engineers grants for two phases, totaling $4.4 million. The project is led by David Kaplan, Ph.D., a professor with the Engineering School of Sustainable Infrastructure and Environment in the Herbert Wertheim College of Engineering and director of the Howard T. Odum Center for Wetlands, and Mauricio Arias, Ph.D., an associate professor at USF. In a paper published recently in the Journal of Environmental Management, Kaplan, UF assistant professor Elise Morrison, Ph.D., and NCSU’s Maria Menchu Maldonado, Ph.D., chronicled their work with harmful algal blooms in the Caloosahatchee River and Estuary, the environmentally sensitive link between Lake Okeechobee and Florida’s southwestern coast. Maldonado performed the work under the guidance of NCSU collaborator Natalie Nelson. In a collaboration between multiple colleges, organizations, departments and universities, the paper’s other authors are Eric Milbrandt of the Sanibel-Captiva Conservation Foundation, Edward Phlips of UF and Natalie G. Nelson of NCSU. The project’s facilitators include Darlene Velez, research coordinator with the UF Water Institute, and Lisa Krimsky, Ph.D., a water resources regional specialized agent with IFAS. Using water samples and computer algorithms, the team developed prediction models based on two water sources feeding the river: Lake Okeechobee and the river’s watershed – the water run-off from the surrounding land. The models determine levels of chlorophyll-a, which is a pigment in algae that is indicative of algal bloom conditions. “For watershed-dominated conditions, the model was able to predict 49% of the variation in next-day chlorophyll-a, which isn’t bad, but for lake-dominated conditions, the model was much better, explaining 78% of the variation in next-day chlorophyll-a in the water,” Kaplan noted. Unlike traditional forecasting models for algal blooms, which are often complex and require much computing power, these models are designed to be practical for daily decision-making, particularly for the Southwest Florida Water Management District (SWFWMD), which has made improving the health of the Caloosahatchee Estuary a state priority. Ultimately, researchers want to develop an algae-prediction system and tools for water managers to reduce risks in all freshwater bodies. “Definitely, this model could be expanded with the use of more data,” said Maldonado. “The same procedure could be applied in other lakes that are highly managed. And this could be done around the world.” Algal blooms in Florida’s lakes, rivers and estuaries have caused significant environmental and economic damage in recent years, UF researchers contend. Blooms are becoming more frequent and longer lasting. The initial project – called Coupling Lake, Estuarine, and Watershed Models for the Caloosahatchee River and Estuary (CLEW) – designed data- and model-driven guidance for Lake Okeechobee water releases. “The overall motivation is that Lake Okeechobee is a challenging natural resource to manage, particularly deciding when and how much water to discharge from the lake to either estuary,” Kaplan said. “There are many competing needs surrounding management of the lake, which has only so much volume. We don't want to cause flooding or other ecological harm.” The follow-up project is UF’s collaboration with USF to develop tools for end users, meaning agencies and managers to make better decisions. The team wants to deliver a system where water managers press the button to get the one-day risk forecast. The study was organized to predict whether the algae-toxin risk is low, medium or high. “In this case, there is a threshold of algal organisms that is considered harmful,” Maldonado said. “Those waters carry phytoplankton species, a microscopic algae that produce toxins. They can be dangerous to swim in, and they can be harmful to the environment. It can be a liver toxin.” Beginning in the late 19th century, the Caloosahatchee River and its watershed underwent extensive modifications that significantly altered the hydrology of the region, according to SWFWMD. The once-shallow river was deepened and widened into a regulated waterway that was connected to Lake Okeechobee and the Kissimmee Chain of Lakes for navigation, water supply and flood control purposes. “Water quality is a challenge in Lake Okeechobee, including sometimes pretty bad harmful algal blooms,” Kaplan said. “And then, of course, the downstream recipients of whatever water is discharged are very sensitive to the amount of water they're getting and what's in it. They’d prefer it to be only the right amount at only the right times with the best quality."

Imagine a crocodile built like a greyhound — that’s a sebecid. Standing tall, with some species reaching 20 feet in length, they dominated South American landscapes after the extinction of dinosaurs until about 11 million years ago. Or at least, that’s what paleontologists thought, until they began finding strange, fossilized teeth in the Caribbean. “The first question that we had when these teeth were found in the Dominican Republic and on other islands in the Caribbean was: What are they?” said Jonathan Bloch, curator of vertebrate paleontology at the Florida Museum of Natural History. This initial confusion was warranted. Three decades ago, researchers uncovered two roughly 18 million-year-old teeth in Cuba. With a tapered shape and small, sharp serrations specialized for tearing into meat, they unmistakenly belonged to a predator at the top of the food chain. But for the longest time, scientists didn’t think such large, land-based predators ever existed in the Caribbean. The mystery deepened when another tooth turned up in Puerto Rico, this one 29 million years old. The teeth alone weren’t enough to identify a specific animal, and the matter went unresolved. That changed in early 2023, when a research team unearthed another fossilized tooth in the Dominican Republic — but this time, it was accompanied by two vertebrae. It wasn’t much to go on, but it was enough. The fossils belonged to a sebecid, and the Caribbean, far from never having large, terrestrial predators, was a refuge for the last sebecid populations at least 5 million years after they went extinct everywhere else. A research team described the implications of their finding in a new study published in the Proceedings of the Royal Society B. The study’s lead author, Lazaro Viñola Lopez, conducted the research as a graduate student at the University of Florida. He knew his team members had come upon something exceptional when they unearthed the fossils. “That emotion of finding the fossil and realizing what it is, it’s indescribable,” he said. Read more ...

Charities with corporate leaders on their boards spend an average of $130,000 a year lobbying on behalf of their connected companies. That’s according to a first-of-its-kind study that shows how companies benefit from their charitable work — and how charities may be all-too-happy to support their powerful board members in return for lucrative connections. The researchers behind the study say the findings could help policymakers and charity stakeholders keep tabs on a previously hidden form of political influence, but that such arrangements are perfectly legal for now. “Charities stand to gain something by behaving in this way. It doesn’t always have to be corporations pushing charities to behave in a way they don’t want to,” said Sehoon Kim, Ph.D., a professor of finance at the University of Florida and senior author of the new study. “It’s a natural quid pro quo arrangement that arises from the incentives corporations and charities have.” The American Medical Association shows one example of these incentives in action. In the 2010s, they actively lobbied against efforts by federal agencies to curb opioid prescriptions. This benefited companies like Purdue Pharma, the maker of OxyContin widely blamed for exacerbating the opioid epidemic in the U.S. It turned out that Richard Sackler, the former president of the company, sat on the board of AMA Foundation, a relationship viewed by many as controversial at the time. But Sackler had arranged for millions in donations to the foundation, and other charities are likely looking to corporate board members to help engineer large donations for their charitable work by connecting charities to other companies and leaders with deep pockets. Lobbying on behalf of their new friends, then, may simply be the most efficient way to ensure those donations keep flowing. Kim collaborated with UF Professor Joel Houston, Ph.D., and Changhyun Ahn, Ph.D., of the Chinese University of Hong Kong to conduct the analysis, which is forthcoming in the journal Management Science. They painstakingly hand collected data covering more than 400 charities and over 1,000 corporations that identified board connections, donations and lobbying activities that fell both within and outside of the charities’ typical political activity. The researchers focused on larger charities that already engage in some lobbying on their own behalf. These lobbying charities are three times larger than smaller nonprofits that never lobby. After a new corporate board member joined, these charities changed their behavior. They were far more likely to lobby outside of their own interests and to even work to support or defeat legislation that affected their new board member’s company, even when that legislation had nothing to do with their charitable mission. It worked out to about a 14% increase in the charity’s lobbying expenditures. “These were the smoking guns that there’s something going on that’s not supposed to be happening,” Kim said. Because lobbying is such an efficient use of resources, and because charities may lend their friendly brand to these lobbying efforts, this help from charities could significantly benefit these connected corporations. “These are previously unrecognized channels at play in terms of corporate political influence that policymakers need to be mindful of when assessing how influential corporations are likely to be,” Kim said.

When presented with a vignette describing the behaviors and characteristics of a patient with disordered eating, only a quarter of mental health providers who participated in a new study were able to correctly diagnose bulimia nervosa. The findings from researchers at the University of Florida College of Public Health and Health Professions, part of UF Health, appear in the journal Eating Disorders. Two common, yet less-recognized, patient factors may have led to the misdiagnoses, said Dakota Leget, a doctoral student in the college’s Ph.D. program in clinical and health psychology, who conducted the study with her mentor, Rebecca Pearl, Ph.D., an associate professor in the Department of Clinical and Health Psychology. The providers who participated in the study reviewed vignettes about a fictitious patient who was described as either having healthy weight or obesity and who used excessive exercise to compensate for overeating. Many patients with bulimia have average or higher body weight, yet misconceptions persist about the “typical” patient with bulimia, Leget said. “Unfortunately, we have stereotypes that someone with an eating disorder will look ‘very lean’ or ‘sickly,’ but we know that’s not the case for a lot of eating disorders,” she said. The study findings also suggest that providers may not associate excessive exercise with bulimia, despite the fact that it is listed in the Diagnostic and Statistical Manual of Mental Disorders as one of multiple compensatory strategies used by people with bulimia. “I think my biggest takeaway is that excessive exercise may not be on mental health providers’ radar and may be overlooked when patients are presenting for care,” Leget said. For the study, the researchers recruited a nationwide sample of more than 200 mental health providers to read two patient vignettes and then select a diagnosis and recommended number of treatment sessions from a dropdown list of options. The vignettes described fictitious patients who met full diagnostic criteria for their respective disorders, according to the Diagnostic and Statistical Manual of Mental Disorders. Three-quarters of participants correctly diagnosed major depressive disorder in the first patient vignette, which served as a control. Participants were randomly assigned to receive one of two versions of the second vignette. In one version, the patient was described as having a healthy weight; in the second, the patient was described as having obesity. The other patient details were the same for both versions. The patient in the vignette reported she followed a strict diet a few days a week and engaged in a cycle of binge eating accompanied by excessive exercise. The vignette also described the patient’s thoughts and feelings about her appearance and how they affected her activities and relationships. Only 27% of providers correctly diagnosed the patient as having bulimia nervosa, and 38% of providers incorrectly diagnosed the patient with binge eating disorder. Correctly distinguishing between bulimia, binge eating or any other eating disorder is critical, the authors say, not only to ensure patients receive the right treatment, but also to appropriately monitor for other health effects, such as dangerously low sodium levels caused by excessive exercise. “If you are treating the wrong eating disorder, you might not be using the best evidence-based strategy,” Leget said. The findings also point to the need for more continuing education on eating disorders for mental health providers who may not have specialized training, Leget said. “Many people with eating disorders will probably be seen in outpatient settings and they may not be seen by someone with expertise in this area,” Leget said. “Early detection and treatment are crucial. If the community provider is able to detect an eating disorder they can treat that person or guide them to someone with the appropriate expertise so the patient gets the treatment they need sooner rather than later.”

Studying the precipitation patterns in hurricanes may be key to predicting future storm patterns and their potential strength, a University of Florida researcher has found. Supported by a four-year, $212,000 grant from the National Science Foundation, Professor of Geography Corene Matyas, Ph.D. has identified the patterns of rain rates within storms and studied the moisture surrounding these storms. “We are hoping that, if we have a better prediction of moisture availability, that might help us forecast rain events with greater accuracy,” Matyas said. “The more we know about how storms develop, the more we can predict their path and magnitude.” The ideal stage for the perfect storm The potential for devastating high winds, storm surge and flooding poses an annual threat to Florida and its residents. With 1,350 miles of coastline and relatively flat geography that juts out to separate the warm waters of the southeast Atlantic and the Gulf, Florida creates the ideal stage for the perfect storm. Last year broke records with 18 named storms, including 11 hurricanes in the Atlantic basin and three major hurricanes making landfall along Florida’s coast. Early predictions are crucial to hurricane preparedness, allowing for increased response time and resource allocation, and hurricane modeling is essential for understanding these somewhat unpredictable storms. Advances in technology, data collection and the use of artificial intelligence in hurricane modeling have significantly impacted the ability to predict a storm’s path and strength more accurately. Artificial intelligence helps researchers understand hurricanes Matyas has completed two studies on this topic. The first study processed 12,000 images of rain rates from tropical storms and hurricanes in the Atlantic, using a machine learning algorithm called a convolutional autoencoder. Similar in use to image recognition software, the encoder broke the rain rate images down and simplified the patterns. Six main types, or clusters, of rainfall patterns for tropical cyclones were identified. At a presentation of the work to forecasters at the National Weather Service office in Jacksonville, the forecasters confirmed that one of the patterns matches what they typically see when late-season storms make landfall over Florida’s Gulf Coast. The second study used the autoencoder to process 4,600 images that represent the amount of moisture in the atmosphere extending 1,000 kilometers away from each hurricane. “We looked for commonalities in the patterns and found four dominant patterns of moisture that accompany Atlantic basin hurricanes,” Matyas said. “We found the biggest storms with the most moisture make the most landfalls, typically in the Caribbean and even in southern Florida. They also have a large moisture pool, giving them a bigger chance of heavy rainfall.” According to Matyas, three of the moisture patterns found in the second study were strikingly like those found in the earlier study that used fewer observations in a statistical analysis. With this use of AI, researchers can now recognize and understand these moisture patterns better, which can improve predictions about a storm’s intensity, its size and the amount of rainfall that will result from it. Early, accurate storm predictions allow Floridians time to prepare Rapid intensification – when, in a 24-hour period, a storm experiences a sudden drop in pressure and a dramatic increase in wind speed – creates much more of a challenge for forecasters. “We tend to boil down a hurricane to a set of coordinates which track the middle of a storm,” Matyas said. “And the fastest winds do focus there, but the moisture gets pulled from thousands of kilometers away and the system forces the moisture up. That moisture must go somewhere. So, the outer edges of the storm need to be understood more as well.” Matyas hopes these studies will help scientists classify rain patterns more accurately and consistently. Continued funding for research at public universities from federal agencies, such as the National Science Foundation and the National Oceanic and Atmospheric Administration, is essential for helping researchers develop tools to detect and predict severe weather events. Matyas is one of two UF faculty members among 18 national researchers named to the 2025 class of fellows by the American Association of Geographers. Matyas and UF Geography Department Chair Jane Southworth, Ph.D. were honored by the organization for their contributions in biogeography, geospatial analytics, soil science, community geography, climatology and other areas related to geography. “I look forward to this opportunity to contribute to the mission of the AAG in a more formal capacity, continuing to research how weather shapes our spaces and share knowledge of earth systems beyond the classroom and the written word to promote an inclusive society,” Matyas said.

So many parents routinely share photos and news about their kids on social media that the behavior has a name: sharenting. Usually harmless and well-meaning, it can also take a dangerous turn, exposing children to online predators, allowing companies to collect personal information and creating pathways for children to become victimized by identity theft. The risks are most pervasive when parents overshare to profit from their social media accounts. Whenever parents share, they are the gatekeepers, tasked with protecting their children’s information, but they are also the ones unlatching the gates. When parents profit from opening the gates, it is especially challenging to balance protecting their kids’ privacy against sharing their stories. Federal and state laws typically give wide deference to parents to raise their children as they see fit. But the state can and does intervene when parents abuse their children. Those laws protect children in the physical world. However, few laws shield children when parents risk harming them online. Let’s consider this hypothetical situation based on a composite of real-life events. Mia (fictional name) is a 7-year-old girl growing up in Orlando. Her mother is a stay-at-home parent who has a public Instagram account and considers herself an influencer. Many lingerie brands pay Mia’s mom to model their clothing. When a lingerie company from overseas offers Mia’s mom some money to have Mia also pose in their clothing, Mia’s mom says yes. Over the next few weeks, Mia and her mom model the clothing together in pictures and videos, sometimes wearing the outfits while reading together in bed, having pillow fights or being playful around the house — always in clearly intimate but arguably appropriate settings. Mia’s mom’s social media page explodes with new followers, many of whom appear to be grown men. The images on the page receive hundreds of likes and multiple comments. Mia’s mom deletes the most inappropriate comments but leaves others, hoping to increase engagement. As Mia’s mom’s social media following grows, so does the amount of money she earns. Mia tells her teacher about the social media page. Her teacher reaches out to Mia’s parents, to no avail. Mia’s mom keeps sharing. The teacher sees this as a potential form of abuse and neglect and, according to her obligation as a mandatory reporter of abuse, she calls in a report to the state’s central abuse registry. The teacher isn’t trying to get Mia’s mom in criminal trouble, but she thinks the family could use some education surrounding safe social media use and possibly access to financial support if they need this type of online exposure to pay the bills. The intake counselor declines to accept the hotline call. The counselor explains that the posting of pictures is not grounds for an abuse, abandonment or neglect investigation. The parent is sharenting, the counselor says, and that is within a parent’s right. Of course, child sexual abuse material is illegal, but the photos posted by Mia’s mom fall into a gray area — not illegal material, but likely harmful to Mia. Should there be a law to stop this? I believe there should be. Just as our views regarding child abuse have evolved, so must our views on sharenting. Merely 150 years ago, it was legal for parents to beat their children. It wasn’t until 1874, when a little girl named Mary Ellen was beaten severely by her caregiver, that courts began to step in. Drawing from existing laws prohibiting animal cruelty, the Society for the Prevention of Cruelty to Animals argued that Mary Ellen had the right to be free from abuse. At the time, there were laws protecting animals from harm by their caregivers but no laws protecting children from such harm! Back to the present: Mia’s disclosure to her teacher could have changed her life and led to her family getting online safety help, if only the child welfare laws were suitably tailored to protect her in the online world as they attempt to do offline. Child protection laws should be expanded to include harms that can be caused by online sharing. The law can both protect parental autonomy and honor children’s privacy through a comprehensive and multidisciplinary new approach toward protecting children online — one that allows for thoughtful investigation, education, remediation and prosecution of parents who use social media in ways that are significantly harmful to their children. This conduct, which falls beyond sharenting, is ripe for legal interventions that reset the balance between a parent’s right to share and a child’s right to online privacy and safety. Stacey Steinberg grew up in West Palm Beach and now lives in Gainesville, where she is a professor at the University of Florida Levin College of Law; the supervising attorney for the Gator TeamChild Juvenile Law Clinic; the director of the Center on Children and Families; and the author of “Beyond Sharenting,” forthcoming in the Southern California Law Review. This piece was also published in the South Florida Sun-Sentinel.

On June 5, 2024, astronauts Butch Wilmore and Suni Williams embarked on a brief mission to the International Space Station. But equipment failures turned what was supposed to be an eight-day trip into a grueling 9 month spaceflight. This week, Wilmore and Williams finally returned to Earth. While their safe return is cause for celebration, the journey doesn’t end when astronauts touch down on Earth. They now face the significant task of recovering from the physical and psychological toll of long-duration spaceflight. As part of the University of Florida’s ongoing research into astronaut health, Rachael Seidler, Ph.D., a leading expert in spaceflight-associated health changes, is studying the long-term effects of space travel on astronauts’ brains and bodies. Seidler’s research focuses on understanding how the central nervous system and brain structure adapt to the challenges of space travel, as well as how these changes affect performance, balance, and mobility once astronauts return to Earth. “While the physical and psychological challenges astronauts face after returning from long-duration space missions are well-documented, the research we do at UF is helping us understand the intricacies of their recovery process,” said Seidler, deputy director of the Astraeus Space Institute at UF. “By following astronauts like Butch and Suni before, during, and after their missions, we can track how the human body responds to the extreme conditions of space.” Behavioral and Brain Changes Post-Flight Seidler’s research tracks astronauts’ physical and neurological recovery by observing them both during their missions and after they return. "One of the most immediate challenges astronauts face when they return to Earth is mobility and balance. These issues often recover more quickly compared to others, but it takes time for astronauts to readjust to gravity,” Seidler said. "The balance, mobility, and walking difficulties astronauts experience during the first weeks back are typically resolved in a short period, but brain function and structure require longer recovery periods." Seidler’s research indicates that astronauts’ brains exhibit compensation when they return to Earth following spaceflight. This compensation occurs through the recruitment of additional neural pathways in order to return to their preflight performance levels. However, the recovery of brain function is a gradual process. "This brain functional compensation is typically no longer observed within one to six months post-flight," Seidler said. However, not all changes are reversible. "Brain structural changes, particularly related to fluid shifts in space, show little to no recovery even after six months to a year," Seidler said. Two significant structural changes include the brain physically sitting higher in the skull and the expansion of the brain’s ventricles — fluid-filled cavities in the brain — which can increase in volume by 25% or more. These changes are thought to result from the fluid shifts caused by microgravity, and they present long-term health considerations for astronauts. Long-Term Health Effects: Understanding the Impact As Wilmore and Williams embark on their recovery journey, the long-term impact of these changes becomes a critical focus for researchers like Seidler. "The long-term health impacts are crucial to understand because they could affect how astronauts recover and perform in their daily lives post-mission," she said. Seidler’s team at UF is conducting a new study in which they are tracking astronauts for up to five years post-flight to better understand these long-term effects. "We’ve had astronauts in space for up to a year, and we know how to manage their physical health during those missions," Seidler said. "But the effects of space on the brain and body extend beyond the mission, and our work helps inform strategies to manage recovery." Collaborating with NASA and Studying Spaceflight-Associated Neuro-Ocular Syndrome Seidler's work is also part of a broader collaboration with NASA and other scientists to assess astronaut long-term health. The project is particularly focused on Spaceflight-Associated Neuro-Ocular Syndrome, which affects up to 70% of astronauts. This condition involves structural changes to the eye and optic nerve, leading to vision problems that may impact astronauts’ function. "Neuropsychological assessments can help to measure astronauts’ brain health, while studies of the ocular system help identify potential vision issues that may arise during and after long-duration space missions," she said. Simulating Space Conditions on Earth In addition to studying astronauts on Earth and in space, Seidler’s team conducts experiments to simulate the effects of spaceflight on human physiology. The UF lab runs experiments in head-down tilt bed rest studies, which keep participants lying down for weeks to months at a time to simulate the lack of gravity. "This type of study helps us understand how fluid shifts in the body during space travel affect mobility, balance, and brain structure," Seidler explained. "In addition, other publications have reported that astronauts describe that vestibular galvanic stimulation feels similar to what they experience when they first arrive in space and when they return to Earth. We have equipment to induce these effects in the lab." Looking Toward the Future As space missions continue to grow longer and more complex, UF’s research is more important than ever. "We’re studying these issues now to ensure that future astronauts are prepared for the physical and cognitive challenges that await them in deep space," Seidler said.