Once more, the wisdom of the ancient world has been proven true. A new report by British researchers shows strong association between the number of one's lifetime sexual partners and one's risk of developing cancer and other serious diseases. According to a new report published in BMJ Sexual & Reproductive Health, women with 10 or more lifetime sexual partners were 91% more likely to develop cancer compared to those with zero to one partner, while men with that number of partners were 64% more likely to contract cancer.