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Green Tea Benefits Blood Sugar

Posted Jul 27 2013 10:08pm

Previously, a number of studies suggest a beneficial effect for green tea on glucose control and insulin sensitivity.  K. Liu, from the Institute of Military Preventive Medicine, Third Military Medical University (China), and colleagues completed a meta-analysis of 17 randomized control trials involving a total of 1133 subjects.  Data revealed that green tea consumption associated with significantly lower blood sugar levels during fasting, and lower blood concentrations of hemoglobin A1c (HbA1c) – a marker of chronic excess glucose in the blood.  Further analysis showed that green tea consumption reduced fasting insulin levels.  The study authors conclude that: “This meta-analysis suggested that green tea had favorable effects, ie, decreased fasting glucose and [hemoglobin A1c] concentrations … [and] significant reduction in fasting insulin concentrations.”

Liu K, Zhou R, Wang B, Chen K, Shi LY, Zhu JD, Mi MT.  “Effect of green tea on glucose control and insulin sensitivity: a meta-analysis of 17 randomized controlled trials.”  Am J Clin Nutr. 2013 Jun 26.

  
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Anti-Aging Forum MLDP Join A4M
Tip #192 - Stay Connected
Researchers from the University of Chicago (Illinois, USA) report that social isolation may be detrimental to both mental and physical health. The team analyzed data from the National Social Life, Health, and Aging Project, a nationwide US study involving 3,000 men and women, ages 57 to 85 years. They arrived at three key findings regarding the relationships between health and different types of isolation:

• The researchers found that the most socially connected older adults are three times as likely to report very good or excellent health compared to those who are least connected, regardless of whether they feel isolated.

• The team found that older adults who feel least isolated are five times as likely to report very good or excellent health as those who feel most isolated, regardless of their actual level of social connectedness.

• They determined that social disconnectedness is not related to mental health unless it brings feelings of loneliness and isolation.

Separately, Rush University Medical Center (Illinois, USA) researchers studied 906 older men and women, testing their motor functions (including grip, pinch strength, balance, and walking) and surveying their social activity, for a period of 5 years. Those study participants with less social activity were found to have a more rapid rate of motor function decline. Specifically, the team found that every one-point decrease in social activity corresponded to an increase in functional aging of 5 years, translating to a 40% higher risk of death and 65% higher risk of disability.

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