Why scientists are starting to worry popular supplements could harm the aging brain

 (Timo Lenzen for The Post)

New studies raise questions about the use of Vitamin D, omega-3 fish oil and glucosamine supplements in some people.

By Ariana Eunjung Cha

What to know about Trump’s proposed $5,000 payouts

The truth about how much protein your body can absorb in one meal

For years, they warned AI could kill all humans. Now people are listening.

Trump makes case for Iran war, promises $5,000 payouts if GOP wins midterms

Supreme Court again blocks new Missouri congressional map favoring GOP

Jimmy Kimmel says he dropped Talarico interview from broadcast after FCC pressure

Democrat’s ad about tragic pregnancy injects abortion into tight governor’s race

How El Niño could bring punishing conditions to the West Coast this winter

See how Canada is shifting its trade beyond the U.S.

Katie Miller held large stake in Elon Musk’s xAI as she slammed ChatGPT online

Philippines defense minister reads private note from China to live audience

Seven simple tips to understand midterm election polls

America has thousands of miles of corridors. Why not put them to extra use?

Since retiring, I’m smothered by husband’s attention. Give advice to this Hax question.

Apple’s first folding phone has three screens and costs $2,000

 (Carlos Barria/Reuters)

The iPhone Duo is Apple’s most significant change to its flagship smartphone since its launch in 2007.

By Miriam Waldvogel

Apple just raised prices on new and older iPhones. Here’s what they cost now.

The best time to buy an iPhone may be right this minute