This study in 2,889 pairs of twins investigated the role of genetic and environmental factors in the development of gambling addiction. The researchers were particularly interested in whether these factors interact in the same way in women's gambling addiction as in men's.
The study found that identical twins who were gamblerswere more likely to have a twin who was also a gambler than non-identical twins. The researchers suggest that this association was more to do with agenetic link than environmental factors.
Read more: http://www.nhs.uk/news/2010/06June/Pages/Gambling-addiction-and-genetics.aspx