Do Brain chemistry and Genetics cause Depression ?

Brain Chemistry

Low dopamine levels make people less likely to work toward achieving a goal.

People with clinical depression often have increased levels of monoamine oxidase A (MAO-A),

• an enzyme that breaks down key neurotransmitters,
• resulting in very low levels of

1. serotonin,
2. dopamine,
3. norepine.

Genetics

A British research team isolated a gene that appears to be prevalent in multiple family members with depression.

The chromosome 3p25-26 was found in more than 800 families with recurrent depression. Scientists believe that as many as 40 percent of those with depression can trace it to a genetic link.

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