Why do only some people have these dimples on their backs?

If you’ve ever noticed two small indentations on your lower back, just above your buttocks, you may have wondered what they mean. Commonly known as “Venus dimples” in women and “Apollo dimples” in men, these small indentations have fascinated scientists and the general public for centuries. While some see them as purely aesthetic, others believe they are a sign of good health, beauty, or even genetic luck. But the real question is: why do only some people have them?

The Role of Anatomy:
Back creases form where the skin attaches to underlying structures via a short ligament. They are located directly over the sacroiliac joints, the area where the pelvis connects to the spine. Unlike muscle tone or fat distribution, these creases are not something that can be achieved simply through exercise. Instead, they are a result of body structure and how the skin adheres to deeper tissues. In other words, their presence or absence is largely determined even before birth.