Harvard Health Content API

Low-carb diets can have varied effects on LDL cholesterol levels based on a person’s body mass index. In lean people, LDL cholesterol values can rise dramatically, while levels may decline in people with obesity.

While a large study found that a drug to lower inflammation failed to prevent heart attacks and related risk, inflammation is still important in the development of coronary artery disease.

Many prescription creams, gels, and pills can ease the redness, swelling, and pimple-like bumps of rosacea. A 2026 scientific review suggests ivermectin 1% cream (Soolantra) and encapsulated benzoyl peroxide cream (Epsolay)—are the most effective topical options for bumps.

Replacement heart valves, which are mechanical (made of metal or carbon) or tissue (made from heart tissue from a cow or pig), are inserted during either open-heart surgery or a minimally invasive procedure. The best option for each person depends on age and other factors.

A 2026 study found that taking more daily steps (even at a slow pace) or walking faster (even without adding steps) was associated with a lower chance of dying early.

For people with sleep apnea and hypertension, using a mandibular advancement device provided similar blood pressure control and less daytime sleepiness as continuous positive airway pressure, according to a 2026 study.