What lifestyle practice is known to have negative effects on skin integrity?

Tanning is known to have negative effects on skin integrity primarily due to the harmful effects of ultraviolet (UV) radiation on the skin. Exposure to UV radiation can lead to various adverse outcomes, such as DNA damage in skin cells, which increases the risk of skin aging, sunburn, and ultimately skin cancers like melanoma. Tanning can also lead to conditions such as photoaging, which is characterized by wrinkles, loss of elasticity, and changes in skin texture and pigmentation.

In contrast, exercise is generally beneficial for skin health due to improved circulation and enhanced nutrient delivery to the skin. Skin cleansing is essential for maintaining skin hygiene and preventing infections. Body piercings, while they do carry some risk of complications like infections when not performed properly, do not inherently affect skin integrity in the same detrimental way that tanning does. Thus, tanning stands out as a lifestyle practice particularly correlated with negative consequences for skin integrity.