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Tag Archives: Green Tea
Green Tea Is Associated With Reduced All-Cause Mortality Risk
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Papers referenced in the video:
Green tea consumption and cause-specific mortality: Results from two prospective cohort studies in China
https://pubmed.ncbi.nlm.nih.gov/28135196/
Tea consumption and mortality of all cancers, CVD and all causes: a meta-analysis of eighteen prospective cohort studies
https://pubmed.ncbi.nlm.nih.gov/26202661/
Green tea consumption and mortality in Japanese men and women: a pooled analysis of eight population-based cohort studies in Japan
https://pubmed.ncbi.nlm.nih.gov/31392470/
Green Tea and Mortality Risk, Update!
In an earlier post (https://michaellustgarten.wordpress.com/2019/09/15/drink-green-tea-reduce-and-all-cause-mortality-risk/), I reported that green tea consumption is associated with reduced risk of death for all causes. Now, there’s more recent data! Drinking more than 1 cup of green tea per day is associated with reduced all-cause mortality risk in a pooled analysis of 8 studies that included 313,381 subjects (age range, 40-103y; Abe et al. 2019).
In women (168,631 subjects), risk of death for all causes was reduced by 10%, 6%, and 18% for 1-2, 3-4, and greater than 5 cups/day, when compared with drinking less than 1 cup per day:
In men (144,750 subjects), risk of death for all causes was reduced by 5%, 7%, and 10% for 1-2, 3-4, and greater than 5 cups/day, when compared with drinking less than 1 cup per day:
Cheers to green tea, for health!
Reference
Abe SK, Saito E, Sawada N, Tsugane S, Ito H, Lin Y, Tamakoshi A, Sado J, Kitamura Y, Sugawara Y, Tsuji I, Nagata C, Sadakane A, Shimazu T, Mizoue T, Matsuo K, Naito M, Tanaka K, Inoue M; Research Group for the Development and Evaluation of Cancer Prevention Strategies in Japan. Green tea consumption and mortality in Japanese men and women: a pooled analysis of eight population-based cohort studies in Japan. Eur J Epidemiol. 2019 Oct;34(10):917-926. doi: 10.1007/s10654-019-00545-y.
If you’re interested, please have a look at my book!
Drink Green Tea, Reduce All-Cause Mortality Risk?
Is green tea consumption associated with reduced risk of death risk from all causes? To investigate this question, Tang et al. (2015) performed a meta-analysis of 5 studies, including 200,884 subjects. As shown below, drinking 2-3 cups (16-24 oz.) of green tea per day was associated with maximally decreased all-cause mortality risk, ~10%.
Post update (9/15/2019): Is there new data since this post was first published (2015) for the association between green tea with all-cause mortality risk? Two relatively large studies have been published since then. First, in a study of 164,681 men (average age, ~53y), consuming green tea (~15g/day) was associated with a maximally reduced risk of death from all causes (black lines; Liu et al. 2016). However, note that this data included both smokers and non-smokers. For non-smokers (green lines), all-cause mortality risk was maximally reduced even further at smaller doses, including ~ 6-10g of green tea/day:
In support of these data, never-smoking men and women (average age, ~52y) that drank more than 8.2g, and 3.3g, respectively, of green tea had an 11% reduced risk of all-cause mortality in Zhao et al. (2017).
The data is clear, drink green tea!
If you’re interested, please have a look at my book!
Reference
Liu J, Liu S, Zhou H, Hanson T, Yang L, Chen Z, Zhou M. Association of green tea consumption with mortality from all-cause, cardiovascular disease and cancer in a Chinese cohort of 165,000 adult men. Eur J Epidemiol. 2016 Sep;31(9):853-65.
Tang J, Zheng JS, Fang L, Jin Y, Cai W, Li D. Tea consumption and mortality of all cancers, CVD and all causes: a meta-analysis of eighteen prospective cohort studies. Br J Nutr. 2015 Jul 23:1-11.
Zhao LG, Li HL, Sun JW, Yang Y, Ma X, Shu XO, Zheng W, Xiang YB. Green tea consumption and cause-specific mortality: Results from two prospective cohort studies in China. J Epidemiol. 2017 Jan;27(1):36-41.
Drink Green Tea, Reduce All-Cause Mortality Risk?
Is green tea consumption associated with reduced risk of death risk from all causes? To investigate this question, Tang et al. (2015) performed a meta-analysis of 5 studies, including 200,884 subjects. As shown below, drinking 5 cups (40 oz.) or less per day is associated with reduced all-cause mortality risk. Drinking 2-3 cups (16-24 oz.) of green tea per day was associated with maximally decreased all-cause mortality risk, ~10%.
If you’re interested, please have a look at my book!
Reference
Tang J, Zheng JS, Fang L, Jin Y, Cai W, Li D. Tea consumption and mortality of all cancers, CVD and all causes: a meta-analysis of eighteen prospective cohort studies. Br J Nutr. 2015 Jul 23:1-11.
Inhibit myostatin with chocolate, increase muscle mass?
Mice that don’t have myostatin have dramatically increased muscle mass:
Myostatin levels increase during aging, a finding that may (at least partially) explain age-related decreases in muscle mass (Basaria and Bhasin 2012). Is there anything that we can do besides strength-training (Snijders et. al 2014) to decrease myostatin levels?
To address this question, Gutierrez-Salmean and colleagues (2014) supplemented young and old mice and humans (29 vs. 62y) with epicatechin, which is found in may foods (see the Table below). They found that in both mice and humans, myostatin increased during aging. However, epicatechin supplementation decreased muscle myostatin levels in both young and old mice and humans! Although they did not report how muscle mass changed as a result of epicatechin supplementation, grip strength significantly improved after only 7 days of supplementation in the older adults. Although this study had a relatively small sample size (20 total subjects), that a food component can reduce myostatin levels is an interesting finding.
So, which foods are rich in epicatechin?
Atop the list are cocoa containing products. It is important to note that 50mg/day of epicatechin were provided to the human volunteers of the Gutierrez-Salmean study. Obtaining 50mg of epicatechin may be relatively easy, if one chooses wisely from the foods listed in the Table, which are listed in mg/gram food, but should be listed as mg/100 grams of food (sorry about the mistake!). For example, drinking 20 ounces of white, black or green tea would yield 10-46mg of epicatechin. Homemade chocolate (https://atomic-temporary-71218033.wpcomstaging.com/2014/09/21/homemade-chocolate-in-2-minutes/) containing 1 ounce of cacao beans yields ~27 mg of epicatechin.
If you’re interested, please have a look at my book!
References:
Epicatechin data: http://www.ars.usda.gov/SP2UserFiles/Place/80400525/Data/Flav/Flav_R03.pdf
Basaria S, Bhasin S. Targeting the skeletal muscle-metabolism axis in prostate-cancer therapy. N Engl J Med. 2012; 367:965–967.
Gutierrez-Salmean G, Ciaraldi TP, Nogueira L, Barboza J, Taub PR, Hogan MC, Henry RR, Meaney E, Villarreal F, Ceballos G, Ramirez-Sanchez I. Effects of (-)-epicatechin on molecular modulators of skeletal muscle growth and differentiation. J Nutr Biochem. 2014 Jan;25(1):91-4.
Snijders T, Verdijk LB, Smeets JS, McKay BR, Senden JM, Hartgens F, Parise G, Greenhaff P, van Loon LJ. The skeletal muscle satellite cell response to a single bout of resistance-type exercise is delayed with aging in men. Age (Dordr). 2014;36(4):9699.
Michael Lustgarten 