According to a new study published in the journal Cell, a certain type of fasting diet can trigger the pancreas to regenerate itself. Of course, the researchers advise people not to try this without medical advice. BBC reports: In the experiments, mice were put on a modified form of the "fasting-mimicking diet." It is like the human form of the diet when people spend five days on a low calorie, low protein, low carbohydrate but high unsaturated-fat diet. It resembles a vegan diet with nuts and soups, but with around 800 to 1,100 calories a day. Then they have 25 days eating what they want -- so overall it mimics periods of feast and famine. Previous research has suggested it can slow the pace of aging. But animal experiments showed the diet regenerated a special type of cell in the pancreas called a beta cell. These are the cells that detect sugar in the blood and release the hormone insulin if it gets too high. There were benefits in both type 1 and type 2 diabetes in the mouse experiments. Type 1 is caused by the immune system destroying beta cells and type 2 is largely caused by lifestyle and the body no longer responding to insulin. Further tests on tissue samples from people with type 1 diabetes produced similar effects.