Wendie Trubow, MD, MBA, IFMCPPresident at Five Journeys, Functional Medicine & Wellness Provider, Best Selling Author, Passionate Champion for Health

How Genetics Can Reveal the Right Diet for You

18 Aug 2026 · 1 min

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Dr. Wendie Trubow describes a genetic test that reveals which diet suits your biology by looking at the AMY1 gene, which controls how well you digest carbs. More copies of the gene mean you can handle more carbs; fewer copies suggest keto or paleo might work better for you.

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Through genetics, you can now determine if you're more ideally suited to be genetically keto, paleo, Mediterranean, or higher carb. That test exists now. And genetically, you can have between— the best way to think about it is your gut is like a fort and the Vikings charging the fort are carbs. And the number of cannons lining the fort is the number of duplicates of this specific gene called the AMY1 gene. It's the gene that makes salivary amylase in your saliva when carbs make first contact in your mouth, it makes the enzyme to break down carbs. So the number of genes you have is the number of cannons lining this fort.