Vitamin D and Cancer: What the Evidence Actually Shows

Vitamin D regulates cell growth, immune function, and inflammation, all processes directly relevant to cancer. Here is what the research shows about deficiency, supplementation, and cancer risk.

Our team's new analysis of nearly 447,000 adults shows lifetime cancer risk varies far more than age alone suggests, and that healthy behaviors meaningfully shift it.

Regular physical activity is linked to reduced risk for at least 13 cancer types. Here is what the research shows and how to build habits that actually protect you.

Alcohol is classified as a Group 1 carcinogen linked to at least seven cancer types. Here is what the evidence says and how reducing your intake can lower your risk.