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The relationship between coffee and diabetes mellitus

Published: 2026-08-21 Author: World Gafei

Last Updated: 2026/08/21, Diabetes is caused by the body's loss of sensitivity to insulin, a substance that regulates blood sugar. As a result, people with diabetes will also have chronic hypertension.

To see the impact of a person's coffee drinking habits on developing diabetes, the researchers looked at previous trials and studies designed for coffee and caffeine intake.

The studies they looked at showed that participants who drank coffee or consumed caffeine were likely to be associated with diabetes. In addition, they tried to find out whether the risk of diabetes was related to coffee intake. The researchers examined 26 articles discussing 31 total trials involving 1096647 people, 50595 of whom developed diabetes. The duration of the trials increased from 2.6 years to 24 years, with most trials lasting more than 10 years. The researchers found that participants who drank more coffee were 30 percent less likely to develop diabetes than those who drank less. They also found that women who drank coffee had a lower risk of developing diabetes than men.

In terms of dose response, the researchers found that people who drank two cups of coffee a day had a 12 percent lower risk of developing diabetes.

This risk reduction was similar to 13 studies on decaffeinated coffee. Those who drank decaffeinated coffee were 21 percent less likely to develop diabetes than those who drank the least coffee.

In conclusion, caffeine alone was associated with a lower risk of diabetes. Those who drank the most caffeine had about a 30 percent drop in diabetes compared with those who drank the least.

The Yanji researchers concluded that caffeine consumption may be inversely related to diabetes risk.

In addition, coffee may provide participants with protective substances against diseases.

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