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NutritionFacts.org Video Podcast

Friday Favorites: Onions Put to the Test for Losing Weight, Lowering Cholesterol, and Treating PCOS

NutritionFacts.org Video Podcast

Michael Greger, M.D. FACLM

Nutrition, Alternative Health, Health & Fitness

4.8951 Ratings

🗓️ 30 May 2025

⏱️ 6 minutes

🧾️ Download transcript

Summary

Let’s discuss weight loss, cholesterol, and PCOS treatment with diet. What can a daily eighth of a teaspoon of onion powder do for body fat, and what can raw red onion do for cholesterol?

Transcript

Click on a timestamp to play from that location

0:00.0

In my last video on onions, I talked about the data supporting or not supporting the role of onions

0:16.0

in boosting testosterone and men, protecting bone health, controlling allergies, and dealing

0:20.3

with chemo side effects.

0:22.2

What about weight loss?

0:24.1

Enter the effect of steamed onion consumption on body fat in overweight subjects.

0:29.0

The researchers used steamed onion so they can better disguise it against placebo and dried

0:33.2

it into an onion powder and gave people just a minuscule amount, about an eighth of a teaspoon a day.

0:39.3

Surely a little daily dusting of onion powder isn't going to affect the course of people's weight,

0:44.3

but check out these results.

0:46.3

Reporting the abstract, a significant reduction in body fat mass on both dexas scan and measured

0:52.3

by CT scan, a significant decrease in the areas of

0:55.4

whole fat, visceral fat, and subcutaneous fat.

0:58.3

Hold on.

1:00.3

If a little onion powder is so effective for weight loss, why wasn't it featured in my book

1:05.2

How Not to Diet?

1:07.5

Because as so often happens in studies, the spin in the abstract doesn't accurately represent

1:13.4

the actual data.

1:15.8

Here are the Dexas scan results.

1:17.4

No significant change of fat in the group that got the placebo capsules.

1:20.5

They only appeared to lose about a spoonful of fat.

1:23.6

Whereas the group unknowingly taking an eighth of a teaspoon of onion powder stuffed into

1:27.2

capsules,

...

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