Cellulite is caused by two things, 1) Fatty tissue and 2) Connective tissue. The appearance of cellulite is caused when the width of the fatty tissue exceeds the width of the connective tissue and when the connective tissue loses elasticity.
The first can be taken care of primarily by diet and working out. Drink your fair share of water, don't eat too much and work out to maintain your metabolism. The second is more problematic and gets worse as you age because collagen is not regenerated so the tissue becomes less elastic and of course most people gain weight as they age because of a less active life style and a drop in metabolism.
Cellulite s the herniation of subcutaneous fat within fibrous connective tissue that manifests topographically as skin dimpling and nodularity, often on the pelvic region (specifically the buttocks), lower limbs, and abdomen. Cellulite occurs in most postpubescent females.
The appearance of cellulite is much more common in women than in men because of differences in the way fat, muscle, and connective tissue are distributed in men and women's skin. The lumpiness of cellulite is caused by fat deposits that push and distort the connective tissues beneath skin, leading to the characteristic changes in appearance of the skin.
Treatments for cellulite range from expensive laser treatments to creams, It really is a personal choice and not everything will work for every body.