The company behind the technology points out that Mr. Tools died, not because his new heart failed, but because of severe abdominal bleeding related to his existing health problems.

Physical exams also showed that blood pressure, insulin resistance, visceral abdominal fat, waist circumference and other warning signs of impending heart disease and diabetes were improved.

If you eat a lot, you'll probably experience nausea, vomiting, pain in the mouth, abdominal pain, diarrhea and cramps. Your heart rate might also become slow or irregular.