Coffee used to be a guilty pleasure. That’s because for decades, doctors told us it caused heart problems.
This goes back to a 1946 study. Researchers at Johns Hopkins found that people who drank lots of coffee had a 300% higher risk of heart disease.[1]
It turns out the research was nonsense. The scientists didn’t control for smoking.
Back in the day, many people drank coffee while smoking cigarettes. Subsequent studies discovered that it was the smoking, not the coffee, that was causing heart disease in the subjects.
Today, coffee is no longer a guilty pleasure. It’s just a pleasure.
It’s linked to a wide range of health benefits, including lower risks for Alzheimer’s, liver disease, stroke, and obesity.[2]
Now, new research shows that one type of coffee offers powerful protection against diabetes.
The study was published in the Journal of Internal Medicine.
Researchers looked at the eating habits and lifestyles of 421 people with type 2 diabetes and 421 who did not have the disease.[3]
The study showed that people who drank two to three cups of filtered coffee a day had a 60% lower chance of becoming diabetic. Those who drank boiled coffee did not get that benefit.
This may be because filters remove a type of molecule from the coffee called diterpenes.
Diterpenes are linked to heart disease. Scientists theorize they may also have a detrimental effect on blood sugar.
Professor Rikard Landberg led the study. He said that after diterpenes are filtered out “you get the health benefits of different phenolic substances. In moderate amounts, caffeine also has positive health effects.”
Filterless coffee drinks are very common now in the U.S.
They include espresso and espresso-based drinks like cappuccinos and lattes. Also coffee made with a French press or a percolator, and Turkish coffees. These coffees may contain higher levels of diterpenes.
The Best Coffee to Reduce Blood Sugar
If you have blood sugar issues, drink drip coffee or other kinds that are filtered. Stay away from espresso, Turkish coffee, French press coffee, percolator coffee, or other types that don’t use a filter.
The study authors said it’s unclear if instant coffee or unfiltered decaf carries a heightened diabetes risk.
As long as you make it the right way, coffee provides health protection as well as pleasure. So drink up.
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[1]https://slate.com/technology/2015/06/is-coffee-good-or-bad-for-you-the-answer-is-neither.html
[2]https://www.healthline.com/nutrition/top-13-evidence-based-health-benefits-of-coffee#section11
[3]https://www.eurekalert.org/pub_releases/2019-12/cuot-fch121719.php