Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Children's Health

Font Size

Fitness in Teen Years May Guard Against This

Swedish study found link between aerobic fitness at 18 and lowered heart attack risk in middle age


National health registers provided information on heart attacks the men suffered later in life. Doctors used this medical data to track men for an average 34 years following their military physical exam.

The researchers found that men with the lowest aerobic fitness had a more than twofold increased risk of later heart attack compared with men who were most fit.

The study authors also looked into the joint effect of obesity and fitness, and found that across all weight groups the risk of a later heart attack increased significantly when comparing the least fit with the most fit.

However, the fittest obese men ran a 71 percent increased risk of heart attack when compared to men who were unfit but lean. They also had more than four times the heart attack risk faced by the fittest lean men.

"This study helps to address the 'fitness versus fatness' question by indicating that both are important, but they are independently important," Daniels said. "Good fitness can't completely counterbalance the health effects of excess weight. Obviously, the best is to be normal weight and fit, which is what we should be aiming at for the majority of our population."

Muscle strength, which also was tested during induction, did not appear to provide the same heart health benefits as aerobic fitness.

Genetics likely plays a large part in the aerobic fitness of teens and, by extension, their protection against heart attack, Nordstrom said. Another study that focused on twins within this same set of patients found that 78 percent of the variation in their aerobic fitness could be chalked up to genetics.

But it could also be that men who are in good shape in their teens have adopted the sort of lifestyle that will keep them healthy later in life, said Dr. Mark Urman, a member of the American College of Cardiology's Prevention of Cardiovascular Disease Committee.

"If you're fit as a teenager, you're going to be more likely to stay in shape over the course of your life," Urman said. "The better shape you're in, the less apt you are to have cardiovascular problems."

1 | 2

Today on WebMD

child with red rash on cheeks
What’s that rash?
plate of fruit and veggies
How healthy is your child’s diet?
smiling baby
Treating diarrhea, fever and more.
Middle school band practice
Understanding your child’s changing body.

worried kid
jennifer aniston
Measles virus
sick child

Child with adhd
rl with friends
Syringes and graph illustration