Who is more likely at risk for lymphedema?

Depends.: One answer is, if you've had lymph nodes removed (e.g. Along with breast cancer surgery) or destroyed (e.g. Radiation therapy) you may be at risk.

Primary vs 2ndary: As dr. Pappachen said, cancer and treatment can cause lymphedema. This would be secondary lymphedema because something else caused it. It is seen most commonly in cases of breast cancer and women would be most affected. For primary lymphedema, where the cause is not identifiable, it is most commonly begins in women under the age of 35. Primary is much less common than secondary though.

Lymphedema: Lymphedema is due to increased back pressure in either the lymphatic or venous systems or a combination of both. It can occur in any extremity and most commonly in the legs. The goal of treatment is to reduce the pressure by several modalities-elevation, compression stockings or bandages, lymphedema massage and sequential segmental pumps. Unfortunately, lymphedema is a chronic condition.