The cause of short term memory loss sometimes has to do with the advanced age of the sufferer. However, there are four other factors that can play a primary part in forgetting.
(1) Alcohol Abuse
The human brain is an organ that depends on the specialized chemicals created by the body in order for it to control efficiently. When the brain becomes awash in an overabundance of alcohol as a result of constant alcohol abuse the brain ceases to function correctly. As a result, loss of memory ordinarily occurs. In the vernacular of the alcoholic they contact having a "black out" as a way to recognize those periods of time when the drinker is unable to remember anything.
(2) persisting Depression
In a similar fashion persisting depression can also influence the brain's general chemical balance impairing its potential to communicate with itself and the outside world. It is while these times that longer lapses of memory loss can come to be apparent. Fortunately, this qoute is relatively easy to diagnose and treat with the help of a condition care pro and permissible medication.
(3) Improper Drug Use
Similar to problems faced with alcohol abuse, drug abuse (both illegal and prescription) can adversely influence the chemical balance of the brain preventing it from functioning properly resulting in periods of loss. Unfortunately, just like alcohol abuse, it depends on how long and to what extent the abuse has been going on that determines either or not the memory issues can be reversed or not.
(4) Severe Stroke
Damage to the frontal lobe of the brain can be a major factor in losing memories. When a person suffers from a severe stroke which occurs in that part of the brain, irreparable damage can be the result. Only after the sick person begins to recover can a full appraisal be done as to the extent of the memory qoute and either or not that loss can be restored.