Let’s say that a person develops a system to cause a full meal-sized amount of food to enter their stomach while asleep (e.g. a food pack suspended in the esophagus on a timer), halfway through the night.
Does anything untoward occur? Or we would expect that everything just proceeds as normal and you’ve simply gotten more nutrition into your day?
The digestive system certainly works also while you’re asleep. It has to, because digestion takes a surprisingly long time: Food will stay in the stomach for anything between 40 minutes and three hours (says Wikipedia). After that, it passes to the duodenum and onwards to the intestines. The entire process takes many hours, so chances are that every night, your body is quite busy processing the dinner you’ve had.
There are people, usually with cystic fibrosis or some kind of malabsorption issue, who have a feeding tube attached to a pump that delivers some kind of nutritional formula through a stomach tube while they sleep, because they just plain old cannot eat enough food to maintain their body’s needs. Would this count?
Emotionally, for me, it would. Should eating be nothing more than a methodology to gain sustenance, or should it be a social as well as a culinary pleasure? For me, I can actually classify the latter as a “need”.
I thought it was going to be about a Seinfeld episode where George experiences sleep-eating.
Yes, digestion continues very nicely while you’re asleep. It might even be more efficient, since blood flow isn’t diverted away from the G.I. tract to facilitate waking activities like fight, flight and Internet browsing.