Do You Need a Multivitamin? What the Research Says
Do you need a multivitamin? What large trials found on lifespan, heart disease, cancer and memory, who benefits most, and how to choose a safe, tested product.
vitamins
Vitamin D3 vs D2: Which Form Should You Take?
Vitamin D3 vs D2: where each comes from, which raises blood levels better, vegan options, prescription 50,000 IU D2, safe daily doses and the upper limit.
Vitamin C: Benefits, How Much You Need and Best Food Sources
Vitamin C supports essential functions. Compare daily needs and food sources, understand deficiency signs, and check supplement amounts, limits and interactions.
Vitamin D Supplements: How Much You Need and How to Choose
How much vitamin D you need by age, D3 vs D2, when a supplement makes sense, the upper limit, interactions, and how to pick a tested product.