Harvard Health Content API

For some people, the effects of the influenza (flu) virus can lead to a heart attack or cardiac arrest (sudden death). These people typically have reduced blood flow to the heart due to atherosclerosis (narrowed arteries). Because the flu can cause blood oxygen levels to drop to dangerously low levels, it can further reduce the supply of oxygen to the heart, causing a heart attack or cardiac arrest. Fortunately, getting an annual flu shot is associated with reduced risks of a heart attack and related cardiac events.

It’s safe to work the core every day for about 10 to 30 minutes, as long as a person doesn’t develop intense muscle fatigue. There are so many kinds of core-strengthening activities that it’s possible to do a different one each day of the week. Ideas include marching, practicing yoga, doing body-weight workouts, exercising in a pool, and doing housework. Before a core workout, a person should do a warm-up, such as walking, to get blood flowing to the core muscles. After exercising, it’s important to stretch the core muscles to help lengthen them and keep them flexible.

A study published online May 31, 2022, by Annals of Internal Medicine suggests that with or without sugar, coffee is associated with a longer life.

High blood levels of synthetic chemicals known as PFAS (some of which are found in much of the nation’s drinking water) have been linked to a greater risk of high blood pressure in middle-aged women.

Psychological issues such as anger, anxiety, depression, and work stress are associated with a greater likelihood of the heart rhythm disorder known as atrial fibrillation, according to a 2022 study.

Sitting too much can boost stroke risk. But adding more movement—even low-effort activity such as doing household chores—may help lower that risk.

A big, hearty salad can provide the recommended daily dose of vegetables. Adding other filling ingredients such as starches and proteins turns a salad into a healthy, satisfying meal.

Long touted as beneficial for heart health, high-density lipoprotein (HDL) is more complicated than experts once thought. Some forms of HDL grab cholesterol from the bloodstream and other tissues and transport it to the liver, where it’s recycled or disposed, but other types are neutral or perform the opposite action. Most drugs that raise HDL don’t seem to prevent heart disease, and very high HDL levels may even be linked to a higher risk.

Women don’t fare as well as men when it comes to getting treatment for coronary artery disease. Social and cultural factors may help explain this discrepancy. Women tend to downplay their symptoms and delay seeking treatment. But health care providers may be contributing to this problem, too A major underlying issue may be the underrepresentation of women in clinical trials of heart-related conditions.

Cardiovascular conditions can increase a person’s risk of falling. Such falls are usually related to a lack of blood flow to the brain that causes a person to faint. The most common cause is orthostatic hypotension, but severe aortic stenosis and the heart rhythm disorder known as atrial fibrillation can also cause a person to faint. Other falls may result from cerebral microvascular disease, a type of blood vessel damage in the brain that develops over time.