How is liver and kidney deficiency caused?

Deficiency of both liver and kidney is generally called deficiency of liver and kidney, or deficiency of liver and kidney yin. Because liver stores blood, kidney stores essence, essence and blood are of the same origin, liver and kidney deficiency often refers to deficiency of liver and kidney essence and blood, i.e. deficiency of liver and kidney yin. Dizziness, tinnitus, soreness of waist and knees, pain in both hypochondriums, dry mouth, fever in five upset hearts and other manifestations can often be seen. The causes of deficiency of liver and kidney yin are often sexual indiscipline, deficiency of kidney essence, involvement of liver yin blood; emotional disorder, consumption of liver yin blood, involvement of kidney yin for a long time; Long-term illness, old age and physical decline, overwork can also cause liver and kidney deficiency.