The Biological approach to OCD

1. Genetic explanation

• OCD being inherited through genetic transmission
• Twin studies provide evidence, however problems separating the influences of genetic and environmental factors. 
• DNA Profiling- comparing the DNA of OCD sufferers and non-suffers. 
• OCD sufferers often have Tourette's syndrome. 
• Indicates a link between OCD and certain genes.

2. Neural explanation

• Some forms of…