No study has tested vitamin D3 with magnesium, K2, boron, and zinc together. We graded the research on each pairing and explain how to stay within safe limits.
Iodized salt quietly changed American health a century ago. Here is iodine’s history, its role in the thyroid and pregnancy, and an honest look at high-dose claims.
From a 1960s discovery in Iran to cold lozenges and eye health, here is what zinc does, what the research shows, and how too much can drain your copper.
Boron rarely gets attention, yet decades of USDA research tie it to bone, hormones and joints. Here is its history, what studies show, and safe limits.
Vitamin K does far more than help blood clot. Its surprising history, the K1 vs K2 difference, the warfarin interaction, and what the research really shows.
Most adults don’t need high-dose vitamin D, but some groups do benefit. Here’s who may fall short, what large trials found, and how to choose a sensible supplement.
For most healthy adults, a daily multivitamin won’t prevent heart disease or cancer. Some people do benefit, though. Here’s who, and how women’s and men’s formulas differ.
Magnesium is often sold as a sleep fix, but the evidence is small and mostly in older adults. Here’s what it may do, safe doses, and what helps insomnia more.