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.

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

Happy Monday, listeners. This is Rachel Feltman, and you're listening to Scientific Americans Science Quickly. Let's kick off the week by catching up on the latest science news. First, let's check in on a couple of stories we've been following recently. A few weeks ago, Siam's own Alison Partial joined us to explain how and why Paris was trying

to make the sand clean enough for Olympians to swim in.

Now, the river did indeed host individual triathlon swimmers for their event on July 31st,

but since then there's been a lot of trash talk about the river's bacteria levels.

On August 4th, Belgium's Olympic Committee actually said it was pulling its team from the

mixed relay triathlon because one of its swimmers had gotten sick after competing in the

Sen.

Now, Belgium's athlete, Claire McKell, did indeed get quite ill with gastrointestinal symptoms, but she clarified on

Instagram last week that she was sick with a virus, not an E. coli infection, as many folks

had speculated. As Allison explained for us on the pot a few weeks ago, the safety of the

Sen changes from day to day. So it's not really a question of whether or not the Sen might be

dangerous to swim in. It's a question of what days the Sen is too dangerous to swim in and what

days it's safe enough to swim in. And this is something that the Olympic Committee has been

very upfront about. Last week, swimmers actually had to skip a planned practice day because

of high bacterial counts.

They did get cleared to swim the following day, but some swimmers actually used paddle boards

so that they could get a feel for the course without putting their heads under the water.

...