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The average waist size of men in the USA is a size 40 waist circumference (101.6 cm). This is based on the manufacture of trousers, the largest sales of which have fallen into the 36 to 44 inch range for adult men.

However, "normal" waist sizes can vary extremely, from as small as the 20 to 30-inch ranges to the 50 to 60-inch range, depending on the height, weight, and body structure of the individual.

Waist sizes can frequently change, and may increase with age as the abdominal muscles lose tone. A healthy range can be estimated for each person by medical professionals, along with a range of healthy weights for each age.

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14y ago

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