A study of 202 people with diabetes who were taking insulin found that about 60% of participants never tested their blood glucose levels before driving.
Sudden bouts of low blood sugar, or hypoglycemia, can lead to confusion, delayed reaction, visual disturbances or loss of consciousness. Even in the absence of low blood sugar, people with diabetes may have impaired vision or nerve function in the feet, which can affect driving.
While most accidents related to diabetes complications happen to a small group of people with Type 1 diabetes, who need to take insulin, people with Type 2 diabetes are also at risk.
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Also visit lauren's hope blog for a great post on Diabetes and Safe Driving