Definition of meta-analysis : a quantitative statistical analysis of several separate but similar experiments or studies in order to test the pooled data for statistical significance new!
Numbness or tingling in the hands occurs when nerves in the arm or wrist are compressed or damaged, according to WebMD. One of the simplest causes for nerve compression during sleep is when the arm is bent for a prolonged time or rested underneath another part of the body.
Quick Answer. Some of the causes of tingling in the left arm and hand or both arms and hands, include diabetes, nerve entrapment syndromes, systemic diseases and vitamin deficiencies, according to WebMD. Other causes include alcoholism, toxins, infections and injury.