Food vitamins and minerals can lead to diseases that can have far-reaching effects on health. For instance, 30% of the world's population either has, or is at risk for developing, iodine deficiency. It is estimated that at least 3 million children are blind due to vitamin A deficiency. Vitamin C deficiency results in scurvy. Calcium, Vitamin D, and phosphorus are inter-related; the consumption of each may affect the absorption of the others. Kwashiorkor and marasmus are childhood disorders caused by lack of dietary protein. Many individuals limit what foods they eat for reasons of morality, or other habit. For instance, vegetarians
History of medicine in the Philippines surveyors of herbal medicines at the localities where they were assigned. Common disease during the Spanish period in the Philippines were diarrhea, dysentery, and leprosy. There were also the presence of cholera, inﬂuenza, smallpox, beri-beri, dysentery, bubonic plague, scurvy, rheumatism, asthma, syphilis, tetanus, toothache, and ulcers. Many Filipinos believed in "pasma" (a resulting condition similar to spasm which involves the occurrence of hand tremors, sweaty palms, numbness and pains after the body's exposure to "unhealthy cold" and water), the state of "nausog" ("distress" caused by an unfamiliar person), and "personalistic sorcery". It was in 1830 when the "true pharmacies" were