Scientists have done  on mice that show fasting can have health . Fasting is eating or drinking little or  for a short  of time - 24 hours or sometimes a few days. The tests were done at universities in the USA and Italy. Scientists found that fasting in mice can  the risk of diabetes,  disease, cancer and other . The scientists fed mice for four days on a diet low in , protein and carbohydrates but high in fat. They then gave the mice just 10% of their  food for three days. The scientists found this made the pancreas in the mice work .
The pancreas is the  that uses special beta cells to produce the  insulin. The body uses insulin to break down  in the blood. People with diabetes cannot produce  insulin so they have health problems and it can be . There is too much sugar in their . In type 1 diabetes, the pancreas stops producing insulin. In type 2 diabetes,  not enough insulin is produced or the insulin has no . Scientists said the fasting mice produced increased  of insulin. They said their results were promising and tests now needed to be done on .