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The Lead Levels of some of the most dangerous Pfas compounds have dramatically fallen in Canadian seabird eggs, which the authors of a new peer-reviewed study say illustrates how regulations are effective. The Event Details Researchers looked at Pfas levels in the eggs of northern gannets in the St Lawrence Seaway basin over a 55-year period. Pfas levels shot up from the 1960s through the peak of the chemicals’ use in the late 1990s and early aughts, then fell. The fall coincides with several developments – facing regulatory scrutiny, the chemical giant 3M, which is one of the largest producers of Pfas, began moving away from Pfos, among its most common and toxic compounds. By 2015, major chemical makers reached an agreement with the US Environment Protection Agency to phase out Pfos and Pfoa, the latter a similarly problematic compound. The Data Analysis Data shows the levels of Pfos fell from a peak level in the eggs of 100 parts per billion (ppb) to a level of 26ppb by 2024, a 74% drop. Levels of Pfoa are down about 40% over this time, though they ticked back up in recent years. Meanwhile, PFHxS, another common, toxic Pfas compound fell from 0.69 to 0.19ppb, or about 72%. The Impact Analysis Pfas are a class of at least 16,000 chemicals commonly used to make products resist water, stains and heat. They are called “forever chemicals” because they do not naturally break down, and they are linked to a range of health issues such as cancer, thyroid disease, kidney problems and decreased immunity. Raphael Lavoie, a co-author and ecotoxicologist with Environment and Climate Change Canada, called the findings “good news”. “We see this incredible rise to a peak where concentrations seem to be higher than toxicological threshold for those birds, then it really decreases in a nice way,” Lavoie said. “The regulations are having a good effect.” The Prediction However, it is not all good news. The chemical makers moved to a newer generation of smaller Pfas, and those also present risks to the environment and wildlife. The levels of those compounds have probably grown, and the study found one example of a shift, but the new Pfas are more difficult to measure in bird eggs because they do not accumulate in wildlife as much, Lavoie said. Moreover, compounds such as Pfos stay in the environment or animals’ bodies for decades, so the birds and environment will remain contaminated for the foreseeable future, which the authors wrote “emphasizes the importance of maintaining scientific and regulatory vigilance”.

Malina Lee, a 31‑year‑old wedding baker from San Antonio, joined TikTok in 2020 to pass the lockdown‑induced boredom and promote her business. Four years later, an anonymous commenter called “PickleFart” noticed an asymmetrical neck in one of her videos and suggested she check for a goiter.The tip proved accurate: doctors confirmed thyroid cancer. Lee received prompt treatment and, within a year, was declared cancer‑free. She told the outlet that her oncologist was amazed at how early the disease was caught, crediting the TikTok comment as the catalyst.Lee’s experience is part of a growing trend where TikTok’s hyper‑targeted algorithm surfaces health‑related content that resonates with users’ unnoticed symptoms. In several cases, community members have flagged potential conditions that clinicians initially missed.The “PickleFart” persona belongs to Billie Jean Tuomi, who calls herself the “thyroid avenger.” A thyroid‑cancer survivor herself (diagnosed in 2012), Tuomi now scans videos for neck asymmetry and gently advises creators to seek a thyroid panel—a blood test measuring hormone levels and antibodies. The American Thyroid Association recommends adults start routine thyroid testing at age 35, or annually for high‑risk individuals.Tuomi estimates she has flagged dozens of videos, with at least four confirmed serious thyroid issues, including Lee’s. She stresses she does not claim to diagnose, merely urges viewers to consult a physician. After a viral comment, she received a flood of private messages with neck photos, prompting her to change her username.Lee, inspired by Tuomi’s intervention, has begun commenting on other users’ videos, helping one individual discover an enlarged thyroid that required removal. She describes the process as a “domino effect” of community‑driven health awareness.Medical professionals acknowledge the double‑edged nature of this phenomenon. Craig Mittleman, director of emergency services at Lawrence + Memorial Hospital, notes a rise in patients arriving with self‑diagnoses sourced from social media. While this can empower patients to ask informed questions, it also burdens clinicians with debunking misinformation.Gender disparities amplify the issue: research shows women are more likely to seek health information online, often after feeling dismissed by traditional providers. TikTok user Tori Mosser, a 23‑year‑old filmmaker, credits a direct message suggesting chronic appendicitis for prompting surgery that resolved her chronic vomiting episodes.Both Lee and Mosser emphasize the therapeutic value of finding a supportive community on TikTok, especially for invisible or chronic illnesses that are frequently minimized in clinical settings.