Human __ begins to degenerate at 55 years old

Human __ begins to degenerate at 55 years old . So as you can see the actions to take into consideration in order to succeed in the game are simple. First, read carefully the given fact and try to guess the possible correct answers that make sense. If you can not guess the fact then try out your word searching skills by combining the given letters to make valid words.

Human __ begins to degenerate at 55 years old

DNA
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