|US researchers have discovered a gene that only allows women to reproduce when food is plentiful.
Called TORC1, the gene is thought to have helped survival by stopping women from becoming pregnant when food was in short supply, reports Nature Medicine.
When researchers studied mice that did not contain the gene, they found that they were infertile and very overweight.
They now think that a lack of TORC1 may play a similar role in women with both weight and fertility problems, and Professor Marc Montminy, who led the study at Salk Institute in California, believes that the discovery of the gene could help in the development of drugs.
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