Gray Hair or Bald Heads

    June 1942 in “ JAMA ”
    Edgar G. Ballenger
    TLDR Middle-aged men are usually either bald or gray, not both.
    The article discusses the observation that middle-aged men are typically either bald or gray, but not both. If a man is both gray and bald, baldness usually occurs first, potentially indicating premature aging. It is noted that young men can be gray or bald without other signs of aging, and some older men may show signs of senility without being gray or bald. Additionally, laboratory studies have shown that animals on synthetic diets often become gray, but their hair color can return to normal with dietary changes.
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