When Does Collagen Production Begin to Decline? Experts Identify the Start of Skin Aging

The body begins producing less collagen at about age 25, according to information cited from the American Academy of Dermatology. The decline starts gradually, but its effects accumulate in the structure of the skin’s dermis.

After age 25, collagen synthesis falls by approximately 1% each year. By age 40, the body’s accumulated collagen density may have decreased by as much as 30%. The article says the decline accelerates sharply for women during the first five years of menopause because of hormonal changes.

Reduced structural support can lead to wrinkles, fine lines, loss of firmness in the facial oval, thinner skin and reduced moisture retention, according to analysis from Harvard Medical School.

The article also identifies factors that can speed the breakdown of existing collagen. The U.S. National Institutes of Health says ultraviolet radiation can destroy collagen through photoaging without daily protection. Smoking, chronic stress and high-sugar diets can also accelerate protein breakdown. Specialists at Mexico’s Salvador Zubirán National Institute of Medical Sciences and Nutrition recommend an integrated approach that includes daily broad-spectrum sunscreen.