Scientists have suggested by reducing the calories and carbohydrates, one can not just slow the ageing process but also overcome a host of ailments from heart disease and cancer to Alzheimer's. Researchers have found out how limiting the calories' intake works in the body and can influence our chances of living longer. It has offered scientists a way to protect cells from the damage caused by chronic disease, Daily Express reported. The breakthrough now gives scientists a way to protect cells from the damage caused by chronic disease.The finding has revealed how a restricted diet could one day lead to better treatments or even prevent age-related diseases. "The findings could be relevant for a wide range of neurological conditions, such as Alzheimer's, Parkinson's, autism and traumatic brain injury - diseases that afflict millions and for which there are few treatment options," said neurological expert Katerina Akassoglou. She was one of the team at the Gladstone Institutes in San Francisco who identified a novel mechanism by which a type of low-carb, low-calorie diet can delay the effects of ageing.