Mushrooms are one of the most nutritionally complete foods available. They are naturally a good provider of a whole range of essential nutrients like calcium, potassium, and iodine. Typically all mushrooms are very good source of vitamin D. Vitamin D helps in maintaining skeletal calcium balance by promoting calcium absorption in the intestines, promoting bone resorption, maintaining calcium and phosphate levels for bone formation. Other roles of vitamin D include the modulation of cell growth, improving neuromuscular and immune function, and the reduction of inflammation. Recent studies also revealed that vitamin D may indirectly help improve symptoms of joint pains. In a study published in the journal Therapeutic Advances in Endocrinology and Metabolism, it appeared that vitamin D deficiency is highly prevalent in patients with joint paints like arthritis, and that vitamin D deficiency may be linked to disease severity in the disease. This discovery is highly associated with vitamin D’s function of modulating genes encoding proteins that regulate cell proliferation, and cell death.