Some recent medical studies seem to suggest that meat, especially red meat, isn't quite the villain as has long been thought and characterized. It is processed meats, such as hotdogs, cold cuts and bacon, which meat eaters also tend to consume, that is now believed to be the cause of a lot of medical conditions, primarily because of their high sodium content.
Other recent studies also seem to suggest that exercise is not a particularly good way to lose weight. Apparently heavy exercisers often offset the effects of weight loss from exercise by eating more food than normal. Part of that might be psychological; people think they are losing a lot of weight and, as a result, cut themselves a bit more slack in their eating and end up eating more. However, according to the studies, people who regularly exercise are able to better maintain their weight. I have tested these theories in my own exercise regimen, and what I have experienced is consistent with the results of the recent studies. I also recalled looking at lists of calorie losses for different forms of exercise and was surprised to see how much exercise was required to lose a meaningful amount of weight.