Diabetes type 2 is caused by the pancreas not producing enough of the hormone insulin, or the body not reacting to insulin, according to the NHS.
Insulin is responsible for converting sugar in the blood into energy for the body.
Without enough of the hormone, patients can feel fatigued, and are more at risk of life-threatening conditions.
Diabetes symptoms may include passing more urine than normal, having cuts or wounds that take longer to heal, or blurred vision.
You could lower your risk of high blood sugar by making these five diet changes.