London, UK – Groundbreaking research conducted by scientists at Queen Mary University of London’s Precision Healthcare University Research Institute and the Norwegian School of Sports Sciences has revealed the effects of a seven-day water fast on the human body. The study, published in the Nature Metabolism journal, investigated the impact of a week-long water fast on 12 volunteers, shedding light on the physiological changes occurring during extended calorie restriction.
The research found that participants experienced significant weight loss during the fast, shedding an average of 12.5 pounds of both fat and lean mass within the first 72 hours. Despite this weight loss, the study also uncovered positive changes in the body, such as improved organ function and enhanced neuron support structures in the brain.
Lead study author Claudia Langenberg, director of Queen Mary’s Precision Health University Research Institute, commented on the findings, stating, “Our results provide evidence for the health benefits of fasting beyond weight loss, but these were only visible after three days of total caloric restriction – later than we previously thought.”
Moreover, the researchers observed a shift in the body’s energy sourcing mechanism during fasting. Instead of relying on caloric intake, the body began utilizing its fat stores as fuel, a process known as “metabolic switching.” This metabolic switch led to the loss of fat and lean mass, with lean mass being restored after the reintroduction of food post-fast.
Despite the promising results, study author Maik Pietzner emphasized the importance of caution, particularly for individuals in poor health. Pietzner stated, “We hope that these findings can provide information about why fasting is beneficial in certain cases, which can then be used to develop treatments that patients are able to do.”
Fasting has garnered attention for its potential health benefits beyond weight loss, with previous research linking intermittent fasting to positive outcomes such as reducing signs of Alzheimer’s and promoting cellular recycling through autophagy. However, recent studies have also highlighted potential risks associated with fasting, underscoring the importance of medical supervision and individualized advice when considering such dietary interventions.
In conclusion, while fasting may offer certain health benefits, including weight loss and metabolic improvements, it is crucial for individuals to approach fasting with caution and seek guidance from healthcare professionals to ensure safety and effectiveness. The findings of this study provide valuable insights into the physiological effects of fasting and may pave the way for future research and treatment development in this field.