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

Hi, this is Your Health Quickly, a Scientific American podcast series. We bring you the latest vital health news, discoveries that affect your body and your mind.

And we break down the medical research to help you stay healthy.

I'm Tonya Lewis.

I'm Josh Fishman.

We're Scientific American's senior health editors.

Today, we are delving into the disease, originally known as Chronic Fatigue Syndrome.

Now it's called MECFS.

Recently, a big study looked at people who got the illness after an infection, and it turned

up a few clues about what might be causing their debilitating and often lifelong symptoms.

The disease once called chronic fatigue syndrome has historically been dismissed by doctors

and other healthcare professionals as a psychosomatic illness without any real physiological causes.

But in recent years, researchers have begun to take the disease,

whose official name is now myelagic encephalomyelitis slash chronic fatigue syndrome, or MECFS, for

short, more seriously. That really is a mouthful, and I'm not even going to try it, but, Tiny, what does it

mean? Well, it comes from myalgia, which means muscle pain and encephalomyelitis, which is inflammation

of the brain and spinal cord due to an infection.

And while it's sometimes referred to as just chronic fatigue syndrome, people with MECFS prefer

...