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.
How Is Smoking Related to Cancer? Smoking can cause cancer and then block your body from fighting it: 4. Poisons in cigarette smoke can weaken the bodyâs immune system, making it harder to kill cancer cells. When this happens, cancer cells keep growing without being stopped. Poisons in tobacco smoke can damage or change a cell's DNA.