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Can Green Tea Improve Blood Sugar Control?

 

A recently published study in the Nutrition Journal studied whether or not green tea may boost a feeling of fullness and if it also moderated insulin sensitivity or glucose levels.  

The researchers from Lund University in Sweden found that in this study the overall sensation of satiety was increased more after a meal accompanied by green tea than after a meal that was accompanied by water.  

There have been numerous studies conducted with green tea and it is because of its health promoting effects and its compounds.  The compounds we are referring to are polyphenolic compounds called catechins which have powerful anti oxidative properties and have a possible role in preventing some cancers and cardiovascular disease.

Some research has suggested that there is a possible link between green tea consumption and diabetes risk.  It has been theorized that drinking green tea may provide modest benefits for glucose control and insulin sensitivity.  



Most of these results have been found in animals and haven't been able to be duplicated consistently with humans.  

This study here according to the researchers is the first study to examine the effect of green tea on both glucose metabolism and satiety (fullness) after the ingestion of a meal.  

What they were looking at in this study was to determine if eating a regular meal and green tea would lower post meal glucose levels, the glycemic index of the meal and insulin levels.  The second objective was to establish whether consumption of a regular meal including green tea increased fullness.

What the researchers found was that there were no significant difference in serum insulin levels or insulin.  They also observed no difference in glucose levels or glycemic index between the green tea meal and the control meal.  

What they did find was that those participants who consumed the meal with green tea felt fuller after the meal and did not feel like consuming more food.  Whereas the participants with the same meal except it included water felt like eating more food after the reference meal.  

It is believed that the difference in taste perception between the green tea participants and the control water participants may have been the cause for the satiety promoting effects.  It is believed that the green tea contributed to a stronger fullness sensation.  

It was also noted that a measurement of taste perception during the meals would have been provided additional information to help determine the reason for the increased satiety.

The take home from this research study is that it appears as of now that green tea does not manipulate insulin or glucose meals, but that it may help you eat less overall food throughout the day.  It may make you feel fuller for a longer period of time and reduce unnecessary snacking. 


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Source:  

J. Josic, A.T. Olsson, J. Wickeberg, S. Lindstedt, J. Hlebowicz.  “Does green tea affect postprandial glucose, insulin and satiety in healthy subjects: a randomized controlled trial”  Nutrition Journal Volume 9, Issue 63, doi: 10.1186/1475-2891-9-63
 

About Jayson Hunter & Jaylab Pro

Jaylab Pro was founded by Registered Dietitian Jayson Hunter. Jayson has been recognized as one of America's foremost weight loss experts by America's Premier Experts™. He has also been featured in USA Today for this accomplishment. Jayson is also a best-selling author having co-authored multiple books in health & fitness and business growth. Jayson and the Jaylab Pro team are proud to create content that helps improve the lives of millions of people around the world. We hope you enjoy it just as much as others have.

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