Heart Health Archive

As people grow older, their hearts tend to become thicker and stiffer and not pump as effectively. But those who stay physically active as they move from middle age into their 70s may be less likely to develop age-related declines in heart function.

The discovery of 44 gene sites associated with high blood pressure may provide leads for developing new drugs to treat this common condition. 

Throughout life, men seem to be twice as likely to have a heart attack as women. This risk appears to persist even after accounting for risk factors such as high cholesterol, high blood pressure, and diabetes. 

Low LDL cholesterol and high HDL cholesterol lower your risk for cardiovascular disease. That is what the studies have always shown us. But a new study suggests that low HDL itself may not be the risk factor for heart disease we thought it was. It could merely be a sign of an unhealthy lifestyle, or other health risk factors, that also contribute to heart disease. Trying to find medications to raise HDL cholesterol may not be as effective as encouraging people to adopt healthier habits.

Calcium supplementation was associated with three to seven times the risk for dementia among older women with cerebrovascular disease.

Heart murmurs can occur when people are young and then return in older age. There are three main causes in adults: increased volume or speed of blood flowing through a normal heart, a stiff heart valve, or a leaky heart valve. Most do not lead to heart problems, but a change in the murmur’s intensity or the appearance of symptoms like shortness of breath, light-headedness, or chest pain would prompt a further medical evaluation.

Here's how to keep your daily salt intake in check.

Image: Mark Poprocki/Thinkstock

Most men probably consume too much sodium, and new federal guidelines are aimed at helping them curb their habit.

The FDA advises no more than 2,300 milligrams (mg) of sodium daily—the amount in about 1 teaspoon of salt. (People with prehypertension and hypertension should limit their intake to 1,500 mg, roughly the amount in 3/4 tea-spoon of salt.)

A common tooth infection often caused by cavities and usually found by chance on dental x-rays is associated with a higher risk of acute coronary syndrome, an umbrella term for a sudden blockage in the blood supply to the heart.

Stick to fresh foods, and fill your salt allotment from healthy sources like whole-grain breads.

 Image: Michael Carroll Photography

As we reported in August 2016, the FDA is encouraging the food industry to cut back on added sodium in commercially processed and prepared food. It's a good reminder for all of us that too much salt in the diet is risky for health. How much is too much? "It's controversial, although I don't think anyone is in favor of unlimited salt intake," says Dr. Randall Zusman, a cardiologist with Harvard-affiliated Massachusetts General Hospital.

Salt risks

Common sources of sodium

A range of choices may help you get a better night's sleep.

Image: Courtsey of Carpenter Co.

When the doctor says you have obstructive sleep apnea (OSA), you'll likely hear about the gold standard in treatment: continuous positive airway pressure (CPAP), which uses forced air, pushed through a tube connected to a face mask, to keep your airway unblocked. Yet many people have trouble adjusting to a bulky CPAP mask. "We often see people who say they tried CPAP and didn't like it, and now it's been years since they've had treatment," says Dr. Stuart Quan, the Gerald E. McGinnis professor of sleep medicine at Harvard Medical School.

You may be able to adjust to CPAP by trying relaxation exercises, practicing wearing the mask during the day, and gradually increasing CPAP pressure. But if it doesn't work out, you do have alternatives.