A classic example concerns the "epidemic" of pellagra, considered an infection early in the century, and which accounted annually for 250,000 cases and 7000 deaths in 15 Southern cotton-growing US ...

pellagra, scurvy, scabies, pediculosis, seborrheic dermatitis, eczematous dermatitis, rosacea, and pruritus. [36,37,38,39] The incidence of skin disease is largely determined by a complex set of ...

Vitamin B3 has a long history of health benefits. In 1937, scientists discovered that a deficiency of this vitamin could lead ...