People with high blood sugar may be more likely to develop cognitive problems, according to new research.

Scientists at Tel-Aviv University in Israel say that among people with type 2 diabetes, high blood sugar levels can impede thinking.

Previous research found a link between diabetes and cognitive decline, with diabetics approximately 1.5 times more likely to develop dementia than the general population.

The newest study suggests slight cognitive impairment may also be linked to diabetes. However, it is still unclear exactly how the two are related.

“Even a mild impairment in cognitive function is of concern for people with type 2 diabetes,” lead researcher Dr. Tali Cukierman-Yaffe said.

As part of the study, the team found that higher hemoglobin A1C levels – which reflect average blood sugar levels over two to three months – are associated with poorer cognitive performance.

Participants were tested on a variety of tasks requiring memory, speed and the ability to manage multiple activities simultaneously.

Herbal supplements may offer a natural way for people to help manage their blood sugar.