Your family history may impact your level of risk of diabetes. Studies show if someone in your family has type 2 diabetes, you are at increased risk of also developing the condition. But how much does it increase your risk?
Type 2 diabetes can be linked to lifestyle and more closely associated with genetic inheritance than type 1 diabetes.
– If one identical twin has type 2 diabetes, the chance of glucose intolerance in the other twin is up to 90%. This shows the closer the relative, the greater the risk.
– It’s estimated that people with one parent with diabetes have double the risk, while both parents increase the risk up to six times.
– Where both parents have diabetes, the average age of diagnosis is 39.
– Having a brother or sister with type 2 diabetes increases the risk more than four times.
– Mothers present a greater risk than fathers. Research at the Diabetes Centre at Sydney’s Royal Prince Alfred Hospital found that diabetes was twice as common when the mother had diabetes.
– A child has a 1 in 7 chance of developing diabetes if the parent is diagnosed before the age of 50, compared to a 1 in 13 chance if the parent is diagnosed after that age.
– Where neither parent has diabetes, the average age for diagnosis of type 2 diabetes is 48 years of age.
– The more relatives with the type 2 diabetes the greater the odds for other family members – for instance, three or more relatives with the condition can increase the risk almost 15 times.
– The average age of diagnosis when six relatives, other than parents, have diabetes was found to be 42 years of age, compared with 52 years of age when only one family member had it.