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 Yachtolt, visit yawcult.co.

.jp.j. That's Y-A-K-U-L-T.C-O.J-P. When it comes to a guide for your gut, count on Yacult.

This is Scientific Americans' 60-second science. I'm Steve Merski. Got a minute?

Telemeres are parts of chromosomes that protect the ends of the chromosomes. They're often likened to the agglets at the ends of shoelaces.

And like aglitz eventually crack, telomeres tend to get shorter over time with each division of the cell,

but they can be topped off again by an enzyme called telomerase-reverse transcriptase.

Various age-related diseases are associated with shortened telomeres.

Elizabeth Blackburn won a Nobel Prize for her discoveries about telomeres and the telomeres

enzyme.

She recently did a Google hangout with Scientific American Editor-in-Chief Mariette de Christina,

which included taking questions from attendees via social media.

Can telomeres actually grow longer in response to exercise?

Well, we don't know if telomeres actually grow with exercise.

But what is known is, I'll give you a great example of a study, we didn't do it,

twins.

So they looked at twins, this is a big study, and they said of the twins who actually does

exercise, the one who did exercise and the one who didn't, so

you'd be able to find a lot of twins, it turns out, in that situation.

They said, who's got the longer telomeres?

...