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NutritionFacts.org Video Podcast

Diets and Foods Shown to Improve Depression in Randomized Controlled Trials

NutritionFacts.org Video Podcast

Michael Greger, M.D. FACLM

Alternative Health, Health & Fitness, Nutrition

4.8951 Ratings

🗓️ 18 May 2026

⏱️ 7 minutes

🧾️ Download transcript

Summary

Dietary interventions were put to the test for major mental illness.

Transcript

Click on a timestamp to play from that location

0:00.0

Psychiatry is an important juncture, with the current drug-focused model having only achieved

0:11.7

modest benefits.

0:13.5

So what about nutritional interventions?

0:16.2

Diet may be as important as psychiatry as it is to cardiology.

0:20.7

That's quite the bar.

0:21.6

You don't know if diet can help, though, until you put it to the test.

0:27.6

For example, the famous Geico study, a multi-centre, randomized control trial of a nutrition

0:32.6

intervention program in a multi-ethnic adult population and corporate setting,

0:36.6

looked at reducing depression

0:38.5

and anxiety and improving quality of life.

0:41.5

Researchers found that advice to eat a strictly plant-based diet improved indicators

0:45.7

of depression, anxiety and work, productivity, specifically significant improvements in depression,

0:51.0

anxiety, fatigue, emotional well-being, daily functioning because

0:54.2

of emotional health, improvements and impairments while working because of health, overall work

0:58.6

impairments because of health, and non-work-related activity impairment because of health,

1:02.8

compared to the control group, at 18 weeks. Even just cutting out meat can improve mood.

1:08.3

Omnivores were randomly assigned to a control group to consume

1:11.1

meat and clean fish and poultry daily, or just the fish or no meat at all.

1:15.5

And compared to the control group, some mood improvements were found in the total meat

1:19.1

elimination group within just two weeks.

1:22.9

However, just replacing three servings of meat a week with plant-based meat alternatives

1:27.0

was not

...

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