Fasting and calorie restriction have gained attention for their potential health benefits, but can they actually extend lifespan? French biochemist Jessie Inchauspe, known as Glucose Goddess on social media, shared insights from decades of research on diet, fasting, and longevity.
According to Inchauspe, early studies on rats and mice in the 1980s produced mixed results, with some experiments suggesting an 80 percent increase in lifespan, while others showed no benefit or even a reduction in longevity. Later research focused on monkeys over 25-year-long studies provided more clarity. These studies revealed that monkeys already consuming a healthy diet did not experience increased lifespan when their caloric intake was reduced. In contrast, monkeys on a high-sugar or poor diet lived longer when calories were restricted, indicating that the potential longevity benefits of fasting depend heavily on diet quality.
Jessie emphasizes that fasting alone does not guarantee longer life. The benefits are influenced by what you eat, your genetics, overall health, and lifestyle factors. While calorie restriction and intermittent fasting show promise for metabolic health, weight management, and overall wellness, their impact on human lifespan remains uncertain due to a lack of long-term, large-scale studies in people.
In summary, fasting and calorie reduction can contribute to health improvements, but extending lifespan is not solely determined by eating less. Individuals seeking the benefits of fasting should focus on a balanced diet, monitor their nutritional intake, and consult healthcare professionals before adopting extreme fasting routines. More research is needed to fully understand how caloric restriction interacts with human longevity.