Improved Heart Function Seen in Small Study
This time, increased heart rate variability -- a marker of the changes in time intervals between heartbeats -- was noted in a small group of patients who tried fish oil or soy oil supplements for a brief time. Increased heart rate variability has been linked to a lower risk of sudden heart death.
Heart Hazards, Heart Helpers
Of course, heart health isn't just about popping a pill.
is a leading cause of death among U.S. men and women. About 60% of all heart deaths happen suddenly, says Holguin's study.
Hearts need all the help they can get. Every day, the average heart beats 100,000 times and pumps about 2,000 gallons of blood. In a 70-year lifetime, an average human heart beats more than 2.5 billion times, says the American Heart Association (AHA).
- High cholesterol
- Advanced age
- High blood pressure
- A history of smoking
- A family history of heart disease
Holguin's study only included people at least 60 years old. Most rarely ate fish. It's not clear if the same results apply to younger people and those who consume more omega-3 fatty acids from foods.