0 Health • Posted by u/decker 3 hrs ago Myth: the fasting rule before surgery is just hospital fussiness anaesthesia surgery The fasting rule has a real reason behind it. Under general anaesthesia the reflexes that protect your airway switch off. If your stomach still holds food, that content can come back up while you sleep and slip into your lungs. That is aspiration, and it can cause serious lung injury. That is why planned surgery asks for no solid food for about six hours, and usually only clear fluids up to two hours before, following your own hospital's instructions. It is not fussiness or scheduling cruelty. It protects the one tube that keeps you breathing while you are unconscious. Chewing gum, milk in tea, a morning tablet: mention all of it to your team, because the details differ between hospitals. General education, not medical advice.