Yes, there is evidence to suggest that eating less, specifically practicing calorie restriction or intermittent fasting, may contribute to a longer lifespan and improved health outcomes in some individuals.

Studies in various organisms, including mice, rats, and even some primates, have shown that reducing calorie intake without malnutrition can extend lifespan and delay the onset of age-related diseases. The mechanisms behind this phenomenon are not fully understood but may involve metabolic changes, reduced oxidative stress, improved insulin sensitivity, and altered gene expression associated with longevity pathways.

In humans, research on the effects of calorie restriction is still ongoing, but some observational studies and clinical trials have suggested potential health benefits. For example, calorie restriction or intermittent fasting has been associated with weight loss, improved metabolic health, reduced inflammation, and a lower risk of chronic diseases such as type 2 diabetes, cardiovascular disease, and certain cancers.

It’s important to note that calorie restriction should be approached with caution and under the guidance of a healthcare professional, especially for individuals with specific health conditions or dietary requirements. Extreme calorie restriction can lead to nutrient deficiencies, decreased muscle mass, and other adverse effects if not done properly.

Overall, while more research is needed to fully understand the long-term effects of calorie restriction on human lifespan and healthspan, the existing evidence suggests that moderation in calorie intake and adopting healthy eating habits may contribute to overall health and longevity.