BBC News reports that the "number of people in England having a limb amputated because of type-two diabetes has risen dramatically." Obviously this is related to the continuing rise in the number of people developing type 2 diabetes and also with the illness developing when people are younger than previously.
Type 2 diabetes occurs mostly in people who are overweight/obese, and it is one of the very serious side-effects of the many prescription drugs, e.g. corticosteroids, that weaken blood vessel walls, resulting in fluid retention/sodium retention/obesity/raised blood pressure and many other health problems.
To lower your risk of developing obesity, type 2 diabetes, etc. in the first place, it would be prudent to avoid prescription drugs unless they are really necessary, and make a serious effort to minimise your intake of salt/sodium and salty food. - Avoiding salty food entails avoiding the highly-salted processed foods like bacon, sausages, bread, cheese, cornflakes etc. See Sodium in foods
Read my Mensa article on Obesity and the Salt Connection
Children and Obesity