Researchers in a study published in the journal Diabetes found that feeding mice a little olive oil before a carbohydrate-rich meal reduced blood sugar afterward, showing that the order in which you eat could affect blood sugar levels.
Olive oil and a big bowl of pasta usually cause your blood sugar to spike, but scientists at Kyoto University found that downing a shot of olive oil 15 minutes before eating glucose-rich carbohydrates blunted post-meal blood sugar spikes.
This happens because of a weird quirk of the digestive system. When you chug a tiny pre-meal shot of olive oil, it triggers a series of gut hormones, including the now-famous GLP-1 (the one powering weight-loss drugs like Ozempic), and signals your vagus nerve. This biological chemical combo slows a process called “gastric emptying,” forcing your stomach to release glucose into your intestines at a slow, manageable pace instead of one big burst.
Olive Oil Before Carbs Reduced Blood Sugar Spikes in Mice, New Study Finds
Other fats produce the same result, like flaxseed oil and good old-fashioned delicious lard, but olive oil was the most effective. The researchers even found it worked just as well in diabetic mice with impaired insulin production, suggesting their bodies didn’t even need a fully functioning pancreas to reap the benefits of eating in the right order.
The instinct now for someone managing blood sugar after reading all that is to chug some extra virgin olive oil before chowing down on a baking sheet of lasagna, but remember, this entire article has been explicitly about an observable reaction in laboratory mice. Mice are used as test subjects because we share many genetic and biological similarities, but it’s not a one-to-one comparison. So don’t start taking shots of olive oil before a glucose-heavy meal until researchers run human trials to see if they get similar results.
Yes, it’ll be very nice if something as simple as meal sequencing helps you manage your blood sugar, since it costs relatively little and it’s really more of a habit you have to develop, but pump the brakes for a little while longer, knowing that maybe one day all you have to do to make your life just a little bit easier is knocking back a couple of smooth shots of olive oil.
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