|Sulfur is a non-metallic element, which occurs naturally in food. Interestingly, it is the 6thmost abundant macro-mineral found in human breast milk. Most sulfur obtained through the diet is derived from sulfur-containing amino acids like methionine, cysteine, cystine, and taurine. Methylsulfonylmethane (MSM), also known as organic sulfur, is another form of dietary sulfur and is 100% safe. It can be digested and absorbed by the body. MSM is considered the building block of protein and can be found in meat, tomatoes, corn, dairy products, apples, raspberries, whole grains, legumes and vegetables.