How long do you have to wait after eating to shower?

Digestion requires blood flow and digestion generates heat. If you take a warm shower, exercise or go for a swim, your blood needs to be diverted to your skin surface for cooling purposes. This interferes with your digestive process and you can end up having a stomach ache, faint or even have a heart failure in some cases if you are weak. Most people would see no ill effects showering after having a meal

It’s better to wait for about 30 mins after a meal before taking a shower.

The reason you might faint is that there won’t be enough blood flowing to the brain. Digestion requires a high percentage of blood and when you have your warm shower the blood vessels dilate in order to cool down the body by releasing the heat from blood to the skin which means more blood flows through those vessels and since there will be so much blood being used elsewhere your brain might lack blood hence the faint part.

  • BinWH

    If the issue is blood flow to the brain, then don’t stand up after eating either as the blood will have a difficult time getting from the stomach to the brain! The reality is our bodies can react to changes in position and blood flow to assure sufficient circulation to the brain. For example, if someone with low blood pressure stands up too quickly, they may get light headed and could faint. This is much more likely situation than the very small diversion of blood to the skin during showering!!! For someone who is unhealthy and prone to fainting and low blood pressure, they should be careful any time they take a shower or stand up for that matter.