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Link: Genes and human disease

Most diseases involve many genes in complex interactions, in addition to environmental influences. An individual may not be born with a disease but may be at high risk of acquiring it. This is called as genetic predisposition or susceptibility. The genetic susceptibility to a particular disease due to the presence of one or more gene mutations, and/or a combination of alleles need not necessarily be abnormal.

This page talks about “genetic predisposition” to common diseases such as cancer, diabetes, cardiovascular disease, and asthma, and provides resources to finding out more about genes and these diseases.

© World Health Organisation 2015

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