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.
Others causes of tingling in the hands and legsâ¦. 1  Sitting or standing in the same position for prolonged periods of time. 2  Nerve damage. 3  Pressure on spinal nerves caused by a herniated disc. 4  Having abnormal levels of calcium, potassium, or sodium in the body. 5  Lack of vitamins, primarily vitamin B12.