Vegan diets don't work for everyone, I actually tried that for about 8 or 9 months and my energy levels plummeted. My vegan diet was monitored by a registered or certified (can't recall which now) dietitian, certified health specialist, certified clinical exercise specialist as well as having a masters in health education (all were the same person), she kept altering the diet to give me energy and it all failed. Once I went back to eating meat my energy levels went back to where they were before the diet started. By the way, that dietician and 2 other strict vegans I knew all died of cancer before they reached 50 years of age. I think when people swing to far to one extreme they're at risk for life threatening illnesses, there has to be a balance.