Diabetes and dementia risk

This month includes National Diabetes Week, and Type 2 Diabetes (T2DB) is a significant risk factor for dementia. The risk of developing T2DB also increases as we age. Having diabetes generally doubles the risk of dementia but it is important to note that there are things people can do help reduce this risk...

Diabetes and dementia risk

This month includes National Diabetes Week, and Type 2 Diabetes (T2DB) is a significant risk factor for dementia. Having diabetes generally doubles the risk of dementia (1) but it is important to note that there are things people can do help reduce this risk. 

T2DB is when your pancreas does not produce enough insulin, or the insulin produced does not result in excess blood sugar being taken out of the blood stream. The health problems associated with diabetes are largely caused by increased blood sugar levels (BSL). Higher BSL make the blood thicker and reduce the blood flow through the tiny blood vessels on the final part of its journey to the body’s organs.  

One of the risky parts of diabetes is that it can sneak up on people. The rates of developing T2DB increases greatly with age. It is estimated that there are currently around half a million Australians living with undiagnosed T2DB (2), and most of these are likely to be over 50 years oldEssentially, if you are over 50, and have not had your BSL checked in the last 3 years, you do carry some risk. If you have had high BSL in the past, then it should be checked every year. 

A graph of a number of people  Description automatically generated with medium confidence  

The risk of developing diabetes increases as we age because the amount of insulin that your pancreas produces decreases. Walso tend to become more sedentary as we age therefore further increasing risk 

The two main lifestyle factors that can be changed to improve your BSL are exercise and diet. Exercise has a striking effect on improving blood sugar levels, but the effect only lasts two to four days. Some people can be less inclined to exercise for a number or reasons that are beyond their control. But the good news is that even raising your heart rate to over 65% of your maximum rate (i.e. moderate exercise) will help. So regular exercise is more important than the intensity of the exercise for controlling blood sugar levels (3) 

If you have significant barriers to improving your dietary and exercise approaches to blood sugar management, or just cannot get it under control, there are medications that will help and your GP is the best place to start these conversations.