Scurvy observed in any organism apart from humans and had been considered an exclusively human disease. Certain birds, mammals, and fish are susceptible to scurvy, but pigeons are unaffected, since they can synthesize ascorbic acid internally. Holst and Frølich found they could cure scurvy in guinea pigs with the addition of various fresh foods and extracts. This discovery of an animal experimental model for scurvy, which was made even before the essential idea of "vitamins" in foods had been put forward, has been called the single most important piece of vitamin C research. In 1915, New Zealand troops in the Gallipoli
Vitamin D deficiency in Australia osteoporosis in the elderly populations. Low levels of Vitamin D have also been associated with other conditions such as heart disease, cancer and kidney disease but further research is required. Recent evidence suggests Vitamin D is also linked to many other health diseases such as cardiovascular disease, chronic kidney disease, diabetes mellitus, multiple sclerosis and some form of cancer. Rickets can be traced back to the 1600s, where a pandemic arose with children around the globe from Vitamin D deficiency. The inadequate intake of UV exposure consequently lead children to numerous health problems such as, growth retardation, muscle weakness, skeletal