Nutritionists have long been interested in the dynamics of telomere length in the body, and how telomeres figure in to human health and life expectancy. Telomeres were first discovered in 1973 by Alexey Olovnikov.
He found that the tiny units of DNA at the very end of each chromosome—the telomere—shorten with time because they cannot replicate completely each time the cell divides and they may be the most powerful biological clock that has yet to be identified.
Hence, as you get older, your telomeres get shorter and shorter. Eventually, DNA replication and cell division ceases completely, at which point you die. However, a growing body of research is showing that certain nutrients play a huge role in protecting telomere length; greatly affecting how long you live