Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years. Yacold also

partners with nature portfolio to advance gut microbiome science through the global grants for

gut health, an investigator-led research program. To learn more about Yachtold, visit yawcult.co.com.j, that's Y-A-K-U-L-T.

C-O.J-P. When it comes to a guide for your gut, count on Yacolt.

This is Scientific American 60-second science. I'm Cynthia Graber. Got a minute?

Obesity increases your risk for heart disease and stroke, diabetes, and even forms of cancer.

So it's probably a good idea to get in the habit of eating right and exercising while you're still young.

But teens get mixed messages about what's a healthy body weight. They're bombarded with unrealistic images of ultra-skinny celebrities and models,

while also seeing media coverage of obesity that includes photos of those who are exceptionally obese.

So a group of researchers in the UK wanted to know,

do British teens have an accurate sense of where they fall along the weight scale?

They examined data from nearly

5,013 to 15-year-olds collected between 2005 and 2012 by what's called the Health Survey for

England. Of the group, nearly three quarters were normal weight, 20% were overweight, with 7% obese.

The survey asked this question for that age group. Given your age and height, would you say that

you are about the right weight, too heavy, or too light? Despite the thin, celebrity-saturated

culture, 83% of normal-weight adolescents thought they were, in fact, a normal weight. Not surprisingly,

the data changed by gender. 11% of normal-weight girls thought they were too heavy compared to just

4% of boys. But the bad news, nearly 40% of normal-weight girls thought they were too heavy compared to just 4% of boys.

But the bad news, nearly 40% of the overweight and obese teens did not self-identify as too heavy.

Overweight girls recognized the issue more than boys did.

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