You never stop learning !For once a very pleasant and welcome "vaccination". Please also daily.
+ Green tea catechins promote oxidative stress (10/2021, eurekalert.org)“That means green tea polyphenols, or catechins, aren’t in fact antioxidants, but rather pro-oxidants that improve the organism’s ability to defend itself, similar to a vaccination,” explains study leader Ristow.
However, this increase in defensive capability manifests not through the immune system, but rather by activating genes that produce certain enzymes such as superoxide dismutase (SOD) and catalase (CTL). It is these enzymes that inactivate the free radicals in the nematode; they are essentially endogenous antioxidants.
Ristow isn’t surprised to see this kind of mechanism at work. His research group showed back in 2009 that the reason sport promotes health is because sporting activities increase oxidative stress in the short term, thus improving the body’s defences. Consuming fewer calories has the same effect, as has been shown several times in animals. Mice fed a reduced-calorie diet live longer than those fed a normal, high-calorie diet. “So it made sense to me that the catechins in green tea would work in a similar way,” Ristow explains.
He goes on to say that the findings from this study translate well to humans. The basic biochemical processes by which organisms neutralise oxygen free radicals are conserved in evolutionary history and are present in everything from unicellular yeast to humans.
Green tea yes, concentrates no
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Catechin (Wikipedia) Tea in the ancient world (teaintheancientworld) Green tea catechins EGCG and ECG enhance the fitness and lifespan
of Caenorhabditis elegans by complex I inhibition (10/2021, aging-us.com)
