Tag: What happens when you fast

According to extensive research, the human body is physiologically capable of withstanding periods without food, a trait inherited from our hunter-gatherer ancestors. However, whether it is unhealthy to go 24 hours without food depends heavily on an individual's health, preparation, and refeeding strategy. This practice, a form of intermittent fasting, triggers metabolic changes but requires careful consideration to ensure safety and effectiveness.

Did you know that after just 12-18 hours of not eating, your body's primary energy source shifts from glucose to stored fat? Let's explore **what will happen to my body if I fast for 18 hours** and dive into the physiological changes of this popular eating pattern.

According to a 2023 study published in *Science Translational Medicine*, extended fasting periods prompt the body to undergo profound metabolic shifts. To understand what do 24 hours without food do to your body, one must look at the transition from burning glucose for fuel to tapping into fat stores through a process known as ketosis.