Causes of depression

The causes of depression are complex. it may be either genetic, biological, and environmental factors can contribute to its development. In some people, depression can be traced to a single cause, while in others, a number of causes are at play. For many, the causes are never known.

1.      Biochemical Causes:

· Genetics: A family history of depression may increase the risk. It's thought that depression is passed genetically from one generation to the next. The exact way this happens, though, is not known

2.      Psychological or Personality Causes:

· Conflict: Depression may result from personal conflicts or disputes with family members or friends.

· Death or a loss: Sadness or grief from the death or loss of a loved one, though natural, can also increase the risk of depression.

· Major events: Even good events such as starting a new job, graduating, or getting married can lead to depression. So can moving, losing a job or income, getting divorced, or retiring.

· Other personal problems: Problems such as social isolation due to other mental illnesses or being cast out of a family or social group can lead to depression. 

·         Abuse: Past physical, sexual, or emotional abuse can cause depression later in life.

3.      Medical conditions:

·  Serious illnesses: Sometimes depression co-exists with a major illness or is a reaction to the illness. These "co-occurring" conditions include heart disease, stroke,diabetes,cancer, hormonal disorders  such as hypothyroidism, Parkinson disease & also Alzheimer's disease. 

4.      Medications

·  Certain medications: For example, some drugs used to treat high blood pressure, such as beta-blockers or reserpine, can increase your risk of depression.

      5.      Abuse:

·  Substance abuse: Nearly 30% of people with substance abuse problems also have major or clinical depression.

    6. Diet:

  Deficiencies in certain vitamines such as folic acid and B-12, may cause depression.