Tag Archive for: avocado

Protect Your Brain—Eat More Magnesium

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In the last Memo, we were left with the researchers’ question: if magnesium intake and BP were not related to a neuroprotective effect, what was? The researchers had some idea based on prior research: inflammation. Let’s take a look at what they found on the follow-up to their original study.

The methodology and subject pool of the study was essentially the same as the other study with the addition of several measures of inflammation, including hs-CRP. Researchers found that as magnesium intake increased, inflammation decreased. Subjects with higher levels of magnesium intake had increased brain volumes including grey matter and white matter, but not white matter lesions. This was an observational study, so cause and effect cannot be determined, but with close to 6,000 subjects, I think we can safely say there’s a definite relationship between magnesium intake and a neuroprotective effect.

How Much Do I Need?

The average intake of magnesium was 360 mg for men and 340 mg for women. A reader recently sent me a post in which a physician recommended that everyone should take 500 mg of magnesium every day. I’m not going to go that far because there’s still too much we don’t know. The biggest issue is we don’t know where the subjects got their magnesium; this study was done in the United Kingdom and they tend to eat more plant-based foods than Americans.

I’ve written to the lead author of the study to see if they plan to publish another study breaking down the contribution from foods and from supplements—I’ll let you know what he says. For now, I’m going to recommend that we increase our consumption of the top five sources of magnesium from foods. Those are:

         1 ounce pumpkin seeds
         3 ounces spinach
         1 ounce almonds
         3 ounces avocado
         1 ounce dark chocolate

If you’re interested in more information on magnesium and its benefits, become an Insider and you can listen to a replay of the last Insider conference call. Remember: Eat less. Eat better. Move more.

What are you prepared to do today?

        Dr. Chet

Reference: European Journal of Nutrition (2024) 63:1807–1818

Avocados: Nutrition Powerhouse

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Let’s finish up our look at avocados. I covered most of the micronutrients on Thursday but there’s one more group to go: the phytonutrients.

The avocado contains three classes of phytonutrients. The first ones are called phytosterols, plant-derived compounds similar in structure and function to cholesterol. Research shows that phytosterols may help prevent the absorption of animal cholesterol, and that can benefit our overall heart health.

Avocados are also high in carotenoid antioxidants such as lutein and beta-carotene. We tend to think about carotenoids in bright orange or red vegetables such as carrots or tomatoes. Those . . .

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Nutrients in Avocados

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Now that everyone who watched the Super Bowl has seen the ads for the avocado, let’s take a look at the nutrition profile of avocados without the pit and skin.

The first thing that jumps out is the fat content: 21 grams of fat in the average-size avocado. A close look shows only 3 grams are saturated fat; the bulk of the fat, 13 grams, is monounsaturated fat, the same healthy fat that’s found in olive oil. And even before you ask “Is avocado oil a good fat to use in salads and cooking?” the answer is . . .

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The Super Bowl and the Avocado

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We’re used to seeing just about anything in a commercial played during the Super Bowl—plenty of beer commercials, of course, and every snack food known in the Hall of Refined Foods. But avocados? Fruits and vegetables have never taken center stage on Super Bowl Sunday but this year, they were front and center. Avocados from Mexico sponsored what was called the first produce ad in Super Bowl history. Imagine that. Billions of people being exposed to ads about a fruit! While savory in flavor, avocados are technically a fruit, not a vegetable.

The ad itself was a take . . .

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