Just to be clear, no one is saying that being overweight is good for your heart. It is not.
In fact, obesity is poised to overtake smoking as the leading cause of preventable death in the U.S., and the majority of those deaths will be directly or indirectly linked to cardiovascular disease.
More than two-thirds of adults in the U.S. are now overweight or obese. Lavie says that if the trend continues the nation may soon see a decline in life expectancy for the first time in decades.
Compared to lean people, overweight and obese people have a much higher incidence of heart attacks, strokes, and death from other cardiovascular causes.
"If we could prevent obesity or limit it, it is very clear that we could reduce heart disease and deaths from heart disease,Lavie says."
But when normal or underweight people get heart disease, the studies show that their prognosis is worse than heart patients who carry extra pounds.