Cellulite on the thighs and bum is usually caused by the way fat, skin, and connective tissue are arranged under the surface of the skin, not by anything “dirty” or dangerous. It’s very common, especially in women, and is influenced by genetics, hormones, and skin thickness.

Why it happens

The main reason cellulite looks dimpled is that fat lobules push upward while fibrous bands in the connective tissue pull downward, creating a lumpy surface. This is why it often shows up on the thighs, buttocks, and hips, where the body naturally stores more fat.

Common factors

  • Genetics. Your inherited skin structure, fat distribution, and connective tissue strength can affect how likely you are to get cellulite.
  • Hormones. Estrogen, insulin, and other hormones may influence fat storage and connective tissue changes, which can make cellulite more noticeable.
  • Skin changes. Thinner or less elastic skin makes dimpling easier to see.
  • Lifestyle factors. Lower activity levels, weight gain, smoking, stress, and some dietary patterns may make it more visible, though cellulite can happen at many body sizes.

A simple way to think about it

Think of cellulite like a “push and pull” effect: fat pushes up from below, while connective bands pull the skin down. That contrast is what creates the familiar orange-peel or cottage-cheese look.

When to worry

Cellulite is usually harmless and very common. If you notice sudden swelling, pain, redness, warmth, or one-sided skin changes, it’s worth getting checked by a clinician, because that would be less typical for simple cellulite.

If you want, I can also explain how to reduce the appearance of cellulite with the most realistic options.