If you eat a high protein diet than you need to make sure you’re also taking B-vitamins. The metabolism of protein, esp animal protein, can result in elevated levels of homocysteine. While people are looking at cholesterol as the cause of heart disease, homocysteine lurks in the shadows leaving plaque in your arteries, leading to Alzheimer’s, stroke, and heart disease. Methylated B-vitamins help to eliminate homocysteine out of your body. If your eating high protein make sure you’re adding the methylated versions of B-Vitamins.. specifically: B-12 (methylcobalamin), B-6 (Pyridoxal phosphate P5P), and folate.