The body of the typical young adult contains approximately 80 percent lean body mass.By the age of 70,this percentage is around ____ percent lean body mass.

Question

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As people age, they tend to lose muscle mass and gain fat, leading to a decrease in lean body mass. By the age of 70, the percentage of lean body mass typically decreases to around 50 percent.

The Body of the Typical Young Adult Contains Approximately 80