Vitamin B12 is naturally found in animal products, including fish, meat, poultry, eggs, milk, and milk products. Vitamin B12 is generally not present in plant foods, but fortified breakfast cereals are a readily available source of vitamin B12 with high bioavailability for vegetarians [ 5, 13-15 ].
Barbecues and charred meat Some research suggests that burnt or charred meat may increase the risk of cancer. Substances called heterocyclic amines are formed in foods that are cooked at high temperatures and blackened or charred.eat may affect cancer risk because of the amount of fat in it, the way it is cooked or because big meat eaters miss out on other protective foods such as fruit and vegetables or wholegrain cereals. What we do know is that meat plays an important part in the Australian diet.
The Paleo diet can be toxic and even contribute to cancer if you are eating large amounts of animal products, especially fried meats. And Paleo can be a very healthy choice if you are eating mostly vegetables and nuts, with organic, free-range meats only on rare occasions.