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 YacL.

This is Scientific Americans' 60-second science.

I'm Karen Hopkins. This will just take a minute.

It's Friday the 13th.

You could ask yourself a question. Do I feel lucky?

If you don't, you could be suffering from Triskeideophobia.

That's a fear of the number 13.

Napoleon, Herbert Hoover, and FDR are well-documented Tris-Kidecophobics.

But why do folks think 13 is unlucky? Particularly when it falls on a Friday, as it will three

times this year. The University of Delaware's Thomas Frenzler is known as Dr. 13. He's an expert on the

number's bad reputation, which may date back to biblical times. After all,

the 13th guest at the Last Supper was Judas, and you know how that worked out for Jesus,

who was crucified on a Friday. Other factoids from Frenzler, the first person to die in a car

accident was killed in New York City on September the 13th in 1899, although that was a Wednesday.

And the ill-fated flight of Apollo the 13th

launched at the 13th minute of the 13th hour, Central Standard Time, on April 11th, 1970.

Can the numerals in the date 41170 add up to gasp 13, as long as you don't include the 19 in

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