The warning comes amid a U.S.-wide outbreak of vaping-related lung injuries.
A co-author of the study told Newsweek it is possible to boost our optimism.
Diets rich in vegetables and fruits are still thought to be the healthiest.
But eating too much chocolate appeared to raise the risk of heart disease.
"Good" cholesterol helps to prevent arteries from blocking, but too much could also be bad for our health.
Evidence suggests the signs of cardiovascular disease appear in our teen years.
Being born to an older mother may carry life-long implications for heart health, the study's lead author told Newsweek.
The research was important to those who felt they didn't have enough time to exercise.
New research suggests that heart health is more complex than monitoring plant and animal proteins.
The new study included data from millions of men and women—and the results are striking.
Every American should be screened regularly for hypertension, says a panel of experts.