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The objective of the present study was to report that aggravating factors of lymphatic or venous edema contribute to aggravate the evolution of lymphedema. A 54-year-old women with a six-year history of venous thrombosis of the left leg reported that her family had thicker arms and legs and that she had inherited this genetic trait. Electrical bioimpedance analysis was performed with the In Body S10 device. The exam revealed total intracellular and extracellular water beyond the parameters of normality as well as water in the thorax and limbs. In the lower limbs, the total extracellular water/total body water ratio also surpassed the limits of normality. The findings demonstrated bilateral lower limb lymphedema with clinical signs in the left leg. Obesity can trigger a new concept of lymphedema that we denominate subclinical systemic lymphedema, which is characterized by an increase in body water. Moreover, aggravating processes of the venous system, such as deep vein thrombosis, can aggravate the edema.