5. Overweight twins may up diabetes risk
Twins with a higher body mass index (BMI) do not have an increased risk of heart attack or mortality, however, there is an increased risk of developing type 2 diabetes, according to a study.
For the study, the researchers compared health data from 4,046 monozygotic twin pairs with different levels of body fat, as measured in BMI. Genetically identical siblings with different BMI provide researchers with a unique opportunity to evaluate obesity-related health risks that are independent of genetic factors. During a follow-up period of on average 12.4 years, differences between the twins were compared when it comes to incidents of mortality, heart attack and type 2 diabetes. The results clearly showed that the twin siblings with a higher BMI did not have an increased risk of mortality or heart attack compared to their thinner counterparts, suggested the study.