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Nitrates are added to processed meats (such as bacon, ham, and deli meats) and are found naturally in leafy green vegetables (such as spinach and kale). But it's not clear how crucial these molecules are compared with other components of those foods, as dietary nitrate levels don't appear to affect heart disease risk. However, nitrate-based drugs are used to treat angina, a common symptom of coronary artery disease.

A study published online Aug. 26, 2021, by The Lancet found that blood pressure treatment protects against heart attacks, strokes, and other major cardiovascular disease problems in people up to age 85 and possibly older. For people younger than 75, the study confirmed that people taking blood pressure medicines had 10% to 20% fewer cardiovascular disease problems. For people 75 to 84, there still was a 10% reduction. For people older than 85, the results were mixed, but there still appeared to be a benefit from blood pressure treatment.

Bioidentical hormone preparations aren't superior to FDA-approved hormone medications and may bring additional risks.

Walking pneumonia means a person with pneumonia is highly likely to get well at home and not develop complications. Still, walking pneumonia is considered a significant infection and requires prompt and appropriate treatment. Doctors usually prescribe antibiotics and rest.

The most common type of heart failure in older adults is heart failure with preserved ejection fraction. This is caused by the heart's left ventricle not being able to relax, which means less blood enters the chamber, so less gets pumped out. Prevention and treatments continue to evolve, but include controlling blood pressure, addressing weight gain with exercise and diet, not smoking, and curbing alcohol intake.

A draft guideline from a national panel of experts recommends that people without heart disease who are 60 and older should not take low-dose aspirin to prevent a heart attack or stroke.