According to an Oxford study, meat eaters have an average BMI 8.3% higher. Studies have also shown that a diet rich in vegetables can actually improve overall mood. A plant-based diet can help build healthy bones because you absorb more calcium than meat eaters. Meat contains high levels of kidney acid which the body must neutralize by removing calcium from the bones. When calcium is depleted in the body, this can lead to osteoporosis as we age. In addition to excreting calcium, meat eaters also tend to excrete more uric acid. These two components in the body can lead to kidney and gallstones which can be extremely serious