By Katherine Lang – Medical News Today –
It is well known that diet and exercise affect health, and research suggestsTrusted Source that it can also affect the speed and progression of aging. Primary aging is the innate process that all people experience; secondary aging is the acceleration of the aging process by excess food intake, lack of exercise, and disease.
It is this secondary aging that may be affected by diet, and studies in animalsTrusted Source have found that restricting calorie intake can slow the process, reduce disease, and prolong life.
