More than 40 million Americans take glucosamine for joint pain. A study published in Nature analyzed health records of 65,000 patients and found that people already showing early signs of memory decline who were taking glucosamine were 25 percent more likely to progress to full Alzheimer's disease.

Researchers analyzing health records from hundreds of thousands of women found that patients taking GLP-1 receptor agonists were about 30% less likely to develop breast cancer compared to women not taking the medications. The effect appeared across multiple drugs in the class.

Every time you unlock your phone, your front-facing camera films your face for about eight seconds. Google Research just published a study in Nature showing that those eight seconds contain enough information for an AI system to measure your heart rate with clinical accuracy equivalent to a Fitbit.

Most people can name their heart, lungs, and kidneys without hesitation. Almost nobody thinks about the thymus. Researchers just analyzed CT scans from more than 25,000 adults using AI and found that the health of this organ predicts longevity more powerfully than most tests doctors currently run.

One in three people with depression does not get better on antidepressants. A randomized controlled trial published in JAMA Psychiatry in May 2026 by University of Bristol and Cambridge researchers just offered a specific biological explanation for why.

Texas A&M researchers jpublished a study describing a nasal spray containing microscopic particles from human neural stem cells that, in two doses, reduced the chronic inflammation driving hippocampal aging, restored the cellular energy systems the inflammation was suppressing, and improved memory.

Cannabis does not just erase memories. It creates new ones. Participants under THC intoxication consistently remembered words they had never heard, recalled events that had not happened, and attributed information to sources it never came from. The memories felt completely real. They were not.

The largest review of medicinal cannabis ever conducted analyzed 54 randomized controlled trials spanning 45 years and found no evidence that cannabinoids effectively treat anxiety, depression, or PTSD.

When people picture postpartum depression, they picture a mother. The weeks after birth, the hormonal crash, the sleepless nights, the identity rupture of early parenthood. The conversation about mental health after a baby arrives has, for most of its history, excluded the other parent in the room.

Scientists found that the antidepressant millions take for depression is worsening tinnitus through the same brain chemical it uses to treat anxiety.

Researchers just published a study in Nature Genetics that mapped the genetic activity of more than 200,000 individual brain cells and found something the serotonin story never accounted for. Depression is not distributed evenly across brain chemistry. It is concentrated in two specific cell types.

Tens of millions of people take creatine every day for their muscles. A comprehensive review and a landmark clinical trial published in 2025 and 2026 have now documented what the same supplement is quietly doing to their brains.

Most people think about their circadian rhythm in terms of sleep. Go to bed at a reasonable hour, wake up at a consistent time, avoid screens late at night, and the body clock takes care of itself. Two studies published in early 2026, suggest that this framing is missing most of the picture.

Millions of people taking Ozempic are not telling anyone they are on it. Two studies published this spring found the reason documented in data. People who lose weight using GLP-1 drugs face more social judgment than people who lose weight through diet and exercise.

Hundreds of millions of people take vitamin D supplements for immune support, and many of them, are taking the form called D2. A meta-analysis of 11 randomized controlled trials just found that vitamin D2 actively lowers the body's levels of vitamin D3.

“Our research explains how just moving around might serve as an important physiological mechanism promoting brain health,” said Patrick Drew, a professor of engineering science and mechanics, neurosurgery, biology, and biomedical engineering at Penn State and senior author of the study.

Your doctor looked at your B12 level, saw a number above the cutoff, and told you everything was fine. A study from UCSF published in the Annals of Neurology is now saying that conversation may have missed something important.

Two thirds of all Alzheimer's patients are women. For decades, the standard explanation has been that women live longer, and Alzheimer's is a disease of old age, so the numbers follow naturally. A study of 17,000 adults has now shown that longevity does not explain what they found.

Scientists found that chronic pain persists not because the body fails to heal but because a specific brain circuit keeps instructing the spinal cord to transmit pain signals after healing is complete.

Large number of people who did take Ozempic are confused about why it worked so well for their friend but do not work for them. A study from Japan gave those people the most concrete answer they have received yet, and it reframes the entire conversation around why these drugs work the way they do.

New research found that a protein called FTL1 is the primary driver of brain aging and discovered that removing it actually reverses memory loss.

A study just found that EPA, one of the two omega-3 fatty acids in most fish oil supplements, suppresses the genes the brain needs to rebuild its blood vessels after repeated mild head injuries, and triggers the same tau protein accumulation found in the brains of CTE patients.

Scientists just scanned the brains of hundreds of people with anxiety disorders and found one consistent chemical difference that nobody had identified before. A measurable deficit of a single nutrient in the exact brain region responsible for keeping anxiety under control.

Scientists discover the ideal amount of sleep is actually under 8 hours. In the United States, the CDC reports that more than one-third of adults consistently fail to get enough sleep, yet this new data suggests that the 10% of Americans who oversleep may face similarly accelerated biological aging.

A study of nearly 400,000 patients just found that a standard ratio in your complete blood count, something doctors have been measuring for decades to track infection, predicts elevated Alzheimer's risk years before a single symptom appears.

Scientists just found a hidden brain circuit that controls whether you feel full after eating, and it depends entirely on a type of cell that was dismissed as irrelevant background noise for most of neuroscience's history.

New research shows, that the psychopathic brain is not a normal brain that decided to stop caring. It is a physically different brain, built differently, wired differently, and operating on a fundamentally altered reward and emotional architecture.

Harvard researchers just traced a specific pathway to depression that starts in your gut and runs through a chemical found in 20% of personal care products including most shampoos and body washes.