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.

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

This is Scientific American 60-second science. I Christopher Ndalata. Got a minute?

Astrologists have long contended that the stars profoundly influenced people here on Earth.

And it looks like they may have stumbled onto the truth, at least when it comes to one star,

the sun. Because a new analysis of Norwegian birth records suggests that children born during

periods of high solar activity lived five years less on average than did their counterparts born during

periods of low solar activity. And women born during solar maxima appear to have been less fertile.

Those findings appear in the proceedings of the Royal Society B.

Researchers analyze more than 8,600 births from 1676 to 1878, while controlling for other

factors like socioeconomic class. And indeed, higher solar activity at birth appeared to cut lifespan.

The reason, the researchers researchers say could be exposure to

increased ultraviolet radiation during periods of high solar activity, because that UV light can

degrade in expectant mothers' stores of folate, a B vitamin is essential to a baby's healthy development.

It's unclear whether the effect would still hold today, as many

pregnant women take supplements of the vitamin. And despite the sun's potentially harmful effects,

we still need it to synthesize ample vitamin D. A lot of the media now has been that you should,

if you're pregnant or planning to become pregnant, then if you're avoid sun or should not go south in the winter

to get a lot of sun, especially if you're very pale.

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