Chrome steel gauge for controlling bread intake by a person with diabetes, used as a template for a slice of bread, unknown maker, 1931-1940

Diabetes is a condition where a person’s body does not produce insulin (type 1) or enough insulin (type 2) to regulate blood sugar levels. Prior to the widespread use and access to insulin, life for people with diabetes depended on a very strict diet. This bread gauge was one way of determining portion sizes.

There are a range of types of diabetes, each with their own treatment and management options. Diet, including carb-counting is still an important tool for people living with type 1 diabetes alongside insulin. Insulin intake is matched against the amount of carbohydrates, such as bread, pasta. Each person with diabetes has their own insulin to carbohydrate ratio. People with Type 2 diabetes may be able to manage their condition with diet and exercise alone but other options such as insulin and tablets are available.