Generally people don’t realise to what extend the food we eat affects us. And it does. Sometimes in a strange way. Most people are allergic to milk. We only supposed to drink milk in our infancy. Some people are more allergic than others. I only realised I was allergic to it short time ago. There are  documented cases where some people feel rheumatism because of it. But on the whole you would have digestive problems.

If you feel discomfort because of something then you can’t meditate properly.