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.jp. When it comes to a guide for your gut, count on Yacolt.

This is Scientific American's 60-second science. I'm Christopher Entagata. Got a minute?

Here's a way to fight the ongoing drought in California.

Use more wastewater for irrigation.

The state's water board suggested that strategy a few years ago.

But so far, of the trillions of gallons of water used for irrigation,

only about 6% is wastewater. But in Israel,

which is also notoriously dry, half the country's irrigation water is reclaimed water. The question

is, could pharmaceutical residues, which are found in trace amounts in wastewater, make it into

the veggies, and onto your dinner plate? Israeli scientists focused on an epilepsy drug called carbamazepine, often found in wastewater.

They detected trace quantities in lettuce, parsley, peppers, and other wastewater-grown veggies.

They then fed volunteers either those veggies or organic ones grown in freshwater.

After a week, the wastewater group did indeed have

significantly higher levels of the chemical in their urine, compared to the freshwater group.

Switching to a freshwater-grown diet, though, quickly reverse the effect. The finding is in the

journal Environmental Science and Technology. There's one huge caveat. The amount of the drug in the volunteer's urine

was some 40,000 times lower than would be found after just one therapeutic dose of the drug,

and the researchers say it's unlikely exposure to such tiny quantities poses any risk. But the

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