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The Federal Dietary Guidelines Quietly Dropped Their Drink Limits. The Evidence They Were Based On Did Not Change
The 2025 to 2030 Dietary Guidelines for Americans were released in early January, and the alcohol section is now two sentences long. Where previous editions specified no more than two drinks a day for men and one for women, the
Your Watch Can Now Warn You About High Blood Pressure. What It Cannot Do Is Tell You That You Are Fine
Smartwatch hypertension notifications went live for millions of users this year, and the first serious independent evaluation of what they would actually catch was published in JAMA on February 9. Researchers at the University of Utah applied the notification criteria
The Compounded Weight Loss Drug Business Was Built on a Shortage. The Shortage Ended, and Most Customers Never Heard
The FDA has confirmed that the national supply of semaglutide and tirzepatide has stabilized, and that neither drug appears on the agency's shortage list. That sounds like routine supply chain news. It is actually the legal foundation of
The Largest Trial of a Blood Test for Cancer Missed Its Own Target. The Result Is Still Worth Reading Closely
The primary results of the NHS-Galleri trial were presented at this year's ASCO annual meeting, and they are the first randomized data on whether a multi-cancer blood test changes anything in population screening. Nearly 143,000
The First Randomized Trial of AI in Breast Screening Has Reported, and the Interesting Number Is the One That Did Not Move
The Lancet published the full results of the MASAI trial on January 29, and it is the first randomized controlled trial to test artificial intelligence inside a national breast cancer screening program. More than 100,000 Swedish women were assigned
A Vaccine You Were Already Supposed to Get Keeps Showing Up in the Dementia Data
A study published in June in the Annals of Internal Medicine followed 509,926 American adults aged 66 and older and found that those who received the recombinant shingles vaccine developed dementia at a lower rate over four years than
The Protein Powder Problem Is Not the Protein. It Is What Came With the Plants
Independent laboratory testing of protein powders has now been done at a scale that makes the pattern hard to dismiss. In one large program, 160 products from about 70 brands were screened for heavy metals, and roughly half exceeded at
The Dementia Intervention Sitting in a Drawer, Unworn, in Millions of American Homes
A pooled analysis published this spring combined seven long-running cohort studies across 33 countries, following 61,089 adults over 55 with hearing loss. Hearing aid users developed dementia at a modestly lower rate over about six and a half
Microplastics Are in Human Tissue. What Nobody Can Tell You Yet Is What They Do There
A synthesis published this spring pulled together the strongest strands of the microplastics evidence and laid out both what has been established and what has not. Two findings anchor it. Brain tissue samples carry microplastic concentrations far higher than liver
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