Diabetes Self-Management Blog

After water, tea is the most popular drink in the world, and it has been linked to a variety of health benefits. Studies in the past have shown that black and green tea may help lower blood glucose levels, and a recent experiment may help explain why.

As described at About.com: Diabetes, substances in black tea called theaflavins have been shown to mimic the effects of insulin in certain cells. The study, published in the February 2008 issue of the journal Aging Cell, did not test humans or any other animal, just individual cells. The researchers noted that it is unclear how much of the theaflavins from tea that people drink actually make it to the body’s cells, which could be a good topic for future research.

Interestingly, a substance found in green tea that is similar to black tea’s theaflavins was found to have a less-certain effect on cells than its black tea counterparts had.

The summary of a more direct study on tea and blood glucose levels can be found at WebMD. In this three-year-old study, both black and green tea reduced the blood glucose levels in rats with diabetes. Both also slowed the development of cataracts, and green tea helped reduce blood triglyceride levels.

This blog entry was written by Editorial Assistant Quinn Phillips.


We are currently experiencing technical difficulties with our commenting system. Thank you for your patience as we work to resolve them.

What We're Reading
Diabetes Self-Management Readers' Poll: Cholesterol Checks (12/15/14)
Find Out How Much You Know About Diabetes and Alcohol (12/11/14)
Researcher Ed Damiano Lectures on the Bionic Pancreas (12/09/14)
Diabetes Self-Management Readers' Poll: Metformin (12/04/14)

Nutrition & Meal Planning
Eating to Lower Insulin Needs (12/09/14)
Sugar-Free Labels Can Be Deceptive (12/02/14)
My Battle With the Glycemic Index (11/25/14)
A Short Fast for the Holidays (11/18/14)

Insulin & Other Injected Drugs
New Weekly Type 2 Diabetes Drug Approved (09/26/14)
Dispelling the Myths of Insulin Therapy (08/01/14)
Insulin for Type 2 (07/14/14)
FDA Approves Inhalable Insulin (07/03/14)



Disclaimer of Medical Advice: You understand that the blog posts and comments to such blog posts (whether posted by us, our agents or bloggers, or by users) do not constitute medical advice or recommendation of any kind, and you should not rely on any information contained in such posts or comments to replace consultations with your qualified health care professionals to meet your individual needs. The opinions and other information contained in the blog posts and comments do not reflect the opinions or positions of the Site Proprietor.