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For decades, scientists have explored the impact of calorie restriction on overall health. Reducing calorie intake may decrease metabolic rate, potentially slowing the aging process and activating key biological pathways essential for maintaining good health and muscle rejuvenation. Additionally, it may lower the production of free radicals, enhance cellular tolerance to stress, and guard against diseases that can shorten lifespan.
A recent study discovered that cutting calorie consumption by 12% over two years in adults who are normal or marginally overweight can decelerate aging by 2-3%. Although these effects are modest, they could accumulate over time, potentially lowering the mortality risk by up to 15% over 10-15 years.
The study involved 220 non-obese participants, split into two groups. One group maintained their usual diet, while the other adhered to a diet with a 25% reduction in calories. Researchers ensured that both groups received the necessary nutrients and closely monitored their weight throughout the study. Every participant was obligated to adhere to the program for two years, during which their biological age was assessed using an algorithm known as DunedinPACE.
The research demonstrated that calorie restriction could decelerate human aging, indicating that biological aging is not predetermined and can be influenced by specific interventions. It was noted that reducing calorie intake could lower the risk of mortality by 10-15%, a level of risk reduction comparable to that achieved by quitting smoking.
Reducing caloric intake may initiate a metabolic response that either reverses or mitigates aging effects. Calorie restriction mildly stresses cells and alters pathways linked to longevity, including those associated with insulin and human growth hormone. Before starting a calorie restriction program, it's important to consult with a doctor to make sure you're receiving the necessary nutrients your body requires.
To view the original scientific study click below:
Effect of long-term caloric restriction on DNA methylation measures of biological aging in healthy adults from the CALERIE trial
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