ISLAMABAD - Experts have found that restricting food intake during the day can help prevent health problems such as high cholesterol, heart disease and obesity, as well as improve mental health and wellbeing.
By not consuming any food, our body is able to concentrate on removing toxins, as we give the digestive system a rest.
Nutritionist Claire Mahy told Al Jazeera: "Fasting allows the gut to cleanse and strengthens its lining. It can also stimulate a process called autophagy, which is where cells self-cleanse and remove damaged and dangerous particles."
Scientists have also been studying the link between diet, gut health and mental wellbeing and, as Mosley explained, fasting can lead to the release of BDNF (brain-derived neurotrophic factor) in the brain.
"This has been shown to protect brain cells and could reduce depression and anxiety, as well as the risk of developing dementia," Mosley added.
Many people who have embraced fasting have also found that, done properly, it has helped them lose fat and gain lean muscle mass. ------------------------------
*When not to fast* ------------------------------
Exemptions are made for the elderly, the young, anyone who is ill, for women who are pregnant or menstruating, and for those travelling. In these cases, fasts are made by fidyah – donating money or food to those in need.
As with any diet or lifestyle change, there are risks to fasting as it is not suited to everyone.
Individuals with compromised health or those who are being followed by a physician for any health conditions should consult a doctor before trying it in order to be monitored for some of the side-effects.
"Fasting can lead to low blood glucose levels (BGL), which causes reduced concentration and increased fatigue," explained registered nutritionist Nazmin Islam.
Islam added that sustainable weight loss is only possible with regular fasting and that any weight loss during Ramazan could easily be reversed once an individual returns to their daily eating patterns.
"However, the benefits outweigh the cons. In the long run, fasting, if done correctly, can improve one’s digestive system and overall metabolism."