Health, lifestyle and environment can contribute in memory loss. Some medicines are known to cause memory loss. These include anti histamines, sleeping pills, anti depressants, pain killers, anti-anxiety medicines and drugs for blood pressure and arthritis.

Depression can also cause memory loss and problem in concentrating and staying organized. Deficiency of vitamin B 12 is also among the causes of memory loss. Thyroid problem can also cause memory loss in some cases. Dehydration, especially in case of elderly,is known to cause memory loss, confusion and drowsiness.Excessive drinking of alcohol can also cause the same.