There are numerous causes of sacrum, or sacroiliac, joint pain. According to the Sports Injury Clinic website, the sacroiliac, or SI joints, are located near the tailbone and connect the hip bones with the sacrum, which is a large, triangular bone situated at the base of the spine.
The Mediterranean diet is one such diet. It emphasizes grains, but also emphasizes fruits, vegetables, cheese, yoghurt, and fish, all foods high in lysine and low in arginine. This is generally attributed to omega-3 fatty acids in fish. Fish have a high lysine to arginine ratio. Dairy products also have a high lysine to arginine ratio.
L-arginine is an amino acid commonly sold in supplement form and obtained naturally in the diet. L-arginine-rich foods include plant and animal proteins, such as dairy products, meat, poultry, fish, and nuts. Necessary for producing protein, L-arginine also helps rid the body of ammonia (a waste product) and stimulates the release of insulin.