premise: There is no doubt that vegetarian food can be healthier than a traditional diet indeed, research has demonstrated that vegetarians are less likely to suffer from heart disease and obesity than those who eat meat. One long-standing concern about a vegetarian lifestyle is the risk of failing to take in enough protein. However, historical calculations as to the amount of protein needed for a healthy lifestyle have recently been shown to overestimate the quantities needed, and if vegetarian select their food carefully they should be able to meet their protein needs.
hypothesis: Too much protein in the diet can lead to heart disease.