Can kidney deficiency cause weight loss?

In general, kidney deficiency may lead to weight loss, but not all cases of kidney deficiency result in this condition. Weight loss is more commonly associated with kidney yin deficiency, whereas kidney yang deficiency usually does not directly cause weight loss. The specific analysis is as follows:

Individuals with kidney yin deficiency have insufficient body fluids (yin), which easily leads to internal deficiency fire, consuming nutrients in the body. They may also experience poor appetite and weakened digestion and absorption. Over time, this can result in weight loss and thinness, often accompanied by symptoms such as dry mouth and throat, tidal fever, and night sweats.

For those with kidney yang deficiency, the core issue is a lack of yang energy. Symptoms typically include sensitivity to cold, cold hands and feet, and loose stools. Some individuals may even develop limb edema due to internal fluid retention, so weight loss is unlikely. In fact, slowed metabolism may lead to weight gain in certain cases.

Daily regulation should be based on accurate pattern differentiation. People with kidney yin deficiency may benefit from nourishing yin foods such as tremella fungus and goji berries, while those with kidney yang deficiency should consume warming and tonifying foods like lamb and longan. Additionally, maintaining regular作息 (daily routines), avoiding excessive fatigue, and engaging in moderate exercise can help improve organ function and enhance nutrient absorption.