Red kidney beans contain lectins which act as a trypsin inhibitor. This results in overproduction of digestive enzymes and impaired absorption of food, causing vomiting and diarrhoea 2 to 4 hours after ingestion, recovery within a few hours.
The problems are avoided by boiling the beans for at least 10 minutes and then cooking until soft.
Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page