Learn how vitamin D functions and may affect diabetes, heart disease, cancer, and dementia risk. Plus, how it could benefit your mood and bones.

Vitamin D is crucial for bone strength and calcium absorption, but excessive intake can cause potentially serious ...

Thyroid medication (levothyroxine) is one of the most common prescriptions affected by multivitamins. Calcium and iron can bind to levothyroxine in the digestive tract, forming complexes that block ...