Your stomach is not just a sack of skin where all the food is mixed and sent down the gut, it is well designed and very “clever”. It has special creases or folds from the top where food comes in from the gullet (oesophagus) to the bottom of the stomach where it opens further down (into the duodenum). When you drink it runs down these creases and out of the stomach, often without touching food and without mixing with stomach juices at all. That’s why it doesn’t matter when you drink – before, after or during the meal, unless, of course you drink a Litre or two at a time. But the temperature of the drink can make a difference.
In 1969, a well known scientist and Radiologist professor V.D.Lindenbraten was doing some research involving stomach and gut Radiology. He was trying to retain contrasting substances in the stomach of the patient long enough to have sufficient time for a full x-ray investigation. Professor Lindenbraten. found that a contrast substance (chalky porridge-like drink) when given cold from the fridge would leave the stomach more quickly, than the time needed to tune-up the X-ray machine, not leaving any time for X-rays to be taken. However, if the contrast was warmed up before it was given to the patient, there was enough time to tune everything up and do a full X-ray investigation.
The results have shown, that drinking cold drinks like water or Soft drinks and even beer after the meal shortens the time that food stays in the stomach from 4-5 hours to 20 minutes. Basically, when you have a cold drink – the food you have just eaten is “pushed out” of the stomach. Ice-cream too acts on your digestion in a similar way.
There are two problems with this: first of all, you put on weight more quickly, because there is not enough time for proper digestion, therefore you get NO good nutrients, however, simple sugars and fats don’t need much time to be digested, so you get those and nothing else. You will feel hungry almost immediately, because your body still needs the nutrients you are missing. The second problem is that when food is not digested properly in the stomach, it will literally rot in the gut, producing various poisons causing bloating, diarrhoea, constipation, skin conditions and other health problems.
Drinks should be at least room temperature and when you drink after a meal, please warm it up to at least 37 degrees Celsius, normal body temperature.