When you eat, your body breaks down your food and converts it into sugar or glucose. When that blood sugar becomes high, your pancreas takes action by releasing insulin. Type 1 diabetes or type 2 diabetes happens when something goes wrong with insulin production.
People who assume diabetes happens from overeating sugar may have type 2 in mind. In type 2, the pancreas produces insulin, but it is not working as it should. Lifestyle changes such as diet and fitness help type 2 diabetics avoid insulin injections, which cannot be said of those with type 1.
The immune system attacks the cells in the pancreas at the onset of type 1 diabetes. The damage it causes prevents the pancreas from making insulin. The result of little to zero insulin raises blood sugar to dangerous levels. Scientists still cannot say what triggers the immune system to attack the insulin-producing cells in the pancreas.
So, type 1 diabetes treatment will always begin with daily insulin injections to normalise blood sugar and avoid severe health complications, such as heart and kidney damage. Once you're diagnosed with this condition, it will be with you for the rest of your life.