Is it is too bad to drink cold water after having food?

It's generally not a good idea to drink cold water immediately after eating, especially if you have a warm meal. Here are a few reasons why:

1. Digestion: When you drink cold water after a warm meal, the sudden drop in temperature can cause the blood vessels in your stomach to constrict. This can slow down the digestive process and lead to indigestion, gas, and bloating.

2. Acid Reflux: Cold water can also cause the esophageal sphincter, a muscle that acts as a valve between the stomach and esophagus, to relax. This can lead to acid reflux, which can cause heartburn and discomfort.

3. Absorption of Nutrients: Drinking cold water after a meal can also interfere with the absorption of certain nutrients, such as vitamins and minerals. This is because cold water can cause the stomach to contract more quickly, which can reduce the amount of time the food is in contact with the digestive enzymes and the absorption of these nutrients.

However, it's important to stay hydrated, especially after a meal. Instead of drinking cold water immediately after eating, wait for about 30 minutes to an hour before drinking water. You can also try drinking warm or lukewarm water, which can help to soothe the digestive system and promote better digestion.