Telomeres - tiny units of DNA that cap the end of each chromosome. They shorten with time because they cannot replicate completely each time the cell divides. Eventually, the telomeres are gone and the cell can no longer be replicated. And you age and die. Some people start out with longer telomeres than others. Short telomeres can be indicators of risk for various diseases.
Free radicals and
oxidative stress shorten telomeres and thus shortens your life: smoking, pollution, stress, extreme exercise, etc.
The right kinds of exercise such as interval training and
walking/chores, etc lenthen them. As does glutationine which is
manufactured by your body from sulfur-containing amino acids methionine and cysteine and plant compounds such as those abundant in onions, cabbage, and garlic.
Other
nutrients that lengthen telomeres include vitamin D, B12, Omega 3 EFAs, Zinc, Vitamin
C, E, polyphenols in grapes, cacao and green tea, curcumin (tumeric),
beta carotenes, Magnesium, CoQ10, etc. Really, anything that reduces or
prevents oxidative stress.
Anything that's an anti-oxidant, anything that boost the immune system,
anything that reduces inflammatory response. Also anything that
prevents or repairs damage to DNA such as magnesium and CoQ10.
http://www.jnutbio.com/article/S0955-2863%2811%2900005-2/abstract
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