Intermittent Fasting (IF) is an eating pattern that cycles between periods of fasting and eating; it is more concerned with when you should eat than what you should eat. Some popular approaches are the 16/8 method, the 5:2 diet and alternate-day fasting. Studies show that the advantages of IF could contribute to improved cognitive functions including memory, learning, attention, and executive functions. These are associated with increased levels of brain-derived neurotrophic factor (BDNF), which promotes the survival of neurons and synaptic plasticity. IF might also relieve some symptoms of anxiety and depression related to neurochemical changes (increased gamma-aminobutyric acid (GABA) and serotonin levels, and decreased inflammation and oxidative stress). Fasting induces metabolic adaptations including ketone body generation, and insulin sensitivity attenuates neurodegeneration and is associated with improvements in cognitive function. Though promising, IF isn’t for everyone. Factors such as age, health status, and personal ambitions all matter. People with particular medical issues, pregnant or breastfeeding women, children, teens and people with a background of eating disorders should be careful or avoid IF. Therefore, those considering an IF regimen should see healthcare professionals prior to starting one to guarantee the outline is not only safe for the patient but also appropriate.