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A Princeton-Trained PhD Says These 3 Foods Will Optimize Your Metabolism

Jason Wachob
Author:
September 27, 2024
Jason Wachob
mbg Founder & Co-CEO
By Jason Wachob
mbg Founder & Co-CEO
Jason Wachob is the Founder and Co-CEO of mindbodygreen and the author of Wellth.
Alexis Cowan
September 27, 2024
We carefully vet all products and services featured on mindbodygreen using our commerce guidelines. Our selections are never influenced by the commissions earned from our links.

At mindbodygreen, we've waxed poetic on the importance of gut health. But in case you need a quick reminder: Your gut is at the forefront of basically every function in your body, including, yes, your metabolism.

As the research becomes more and more complex, the connection between gut health and metabolism1 has never been more evident. "Now that microbiome research is really picking up, it's becoming pretty clear that certain species of bacteria in the gut play very important roles in health," Princeton-trained metabolic health expert Alexis Cowan, Ph.D., says on this episode of the mindbodygreen podcast.

In fact, it wasn't until Cowan focused on optimizing her gut that she really saw positive changes in her metabolic health. Below, she shares a few of her favorite grocery staples for stellar gut health—which, in turn, helped her enhance her metabolism and maintain a healthy weight:

1.

Red apples

According to Cowan, your gut bacteria love polyphenols, which are a group of plant-based chemicals with potent antioxidant abilities. "Dark red fruits, like pomegranates, cherries, dark grapes, wild blueberries, raspberries, blackberries…these all contain molecules called polyphenols, which are essentially antioxidant molecules," she explains. "So in addition to scavenging free radicals, they also directly feed these bacteria [and] serve as a food source."

Essentially, anything red-colored and highly pigmented is great for boosting gut-healthy bacteria. But if Cowan had to pick a favorite, she specifically touts red apples. "The red pigment in red apple peels is a specifically good food source," she notes. She says you can even find red apple peel powders on the market (of course, make sure you're buying a high-quality option), but filling your basket with juicy, dark red apples is a solid move, too.

2.

Wild-caught fish 

"Prioritizing the maintenance of muscle mass has to play a big role [in metabolic health], especially throughout the aging process," Cowan explains, which is why she recommends "a diet that both has adequate protein to maintain and grow muscle, as well as polyphenols to mitigate [inflammatory processes] and optimize the microbiome." 

That said, it's important to make sure you're getting enough protein. And sure, there are plenty of plant-based sources you can add to your diet, but Cowan recommends some wild-caught, sustainably sourced fish, if it fits within your lifestyle. "Shellfish are amazing sources of protein and micronutrients," she says (think shrimp, crab, lobster, clams, oysters, and mussels).

"I think leaning more toward smaller fish is good, and if you can get them fresh, that would be even better," she adds (as opposed to canned). But if tinned fish is more accessible to you, then by all means—tinned fish tends to be a more sustainable option, anyway! 

3.

Coffee

Yes, Cowan is a fan of coffee. However, "There are ways to optimize your coffee intake to make sure that you're getting the most out of it without experiencing some of the drawbacks," she notes.

First things first: "A lot of people will use coffee to help them go to the bathroom, which is a red flag to begin with," she says. Essentially, you'll want to make sure that you're in it for the right reasons. "[Make sure] you're not using it as a way to promote a natural bodily function," Cowan adds.

It's also important to ensure you're using quality coffee beans. Coffee itself can carry a specific type of mycotoxin (meaning, a toxic chemical product produced by fungi), and it can be very prone to mold contamination depending on how it's stored—remember, mold thrives in damp, dark environments. "So it's important to get a coffee source that is third-party tested for mycotoxins."

Finally, Cowan recommends optimizing the energizing benefits of coffee by combining it with a source of fat—think coconut cream, coconut oil, butter, or ghee. "Something that has a little bit of protein with the fat to help emulsify into the coffee," she explains.

"The fat essentially will bind onto the caffeine because the caffeine's fat soluble, and it creates a time-release source of caffeine so that you don't get an immediate peak and then a crash in the afternoon. Instead, you're adding to that slow, sustained energy that ultimately I think everybody's looking for when they're going into their workday." Not to mention, coffee is a good source of antioxidant polyphenols. So feel free to drink up! 

The takeaway

The gut-metabolism axis is very much real. Take it from Cowan, who was unable to enhance her metabolic health until she got her gut health up to snuff. Of course, plenty of other foods are A+ for gut health—find a full gut health diet here—but if you're looking for just a few staples, you can't go wrong with the above.

We hope you enjoy this episode! And don't forget to subscribe to our podcast on iTunes, Google Podcasts, Spotify, or Amazon Music

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