Ask the Doctor

A lung nodule on imaging can stem from scars, infection, or cancer. Learn how doctors judge the risk and decide between watching, testing, or removal.

These small, firm skin bumps are usually benign and often appear on the legs. Learn why they form, how they’re removed, and sun‑safety basics to help prevent another one.

Years of relentless itching and thickened skin may reflect an itch‑scratch cycle. Creams alone may fall short and broader treatment may be needed.

A number of physiological changes driven by the body’s internal clock help explain why heart attacks are more common in the morning. These changes include factors involved in blood pressure, blood clot formation, and inflammation.

Blood pressure is the push of blood through the body, like water through a hose. Pressure depends on how hard the heart pumps, how much blood there is, and how tight small vessels are, all influenced by hormones, salt, fluids, and stress.

For many people, non-HDL cholesterol (which is total cholesterol minus HDL cholesterol) may be as good as (or even more reliable than) LDL for assessing a person's risk of heart problems.

Food sequencing calls for eating vegetables and protein before carbohydrates to help stabilize blood sugar and control appetite. Research suggests this pattern may reduce blood sugar spikes and lower hunger hormones, and it may naturally lead to eating fewer carbohydrates.

More than 30% of adults over 70 have amyloid or tau (proteins implicated in the development of Alzheimer’s disease) in their brains yet have no apparent cognitive problems. This may indicate greater cognitive reserve, the brain’s ability to compensate for damage.

Statin dosages fall into three categories (low, moderate, or high) based on how much the medication can lower LDL. The choice of a statin depends on a person's risk.

Eczema flare-ups often trace back to everyday products and habits. See which irritants to skip and how simple swaps may help calm itchy skin.