維生素A 缺乏症 | 食品添加物合法業者資訊網

維生素A缺乏病目前仍是不斷增加中，尤其是兒童的主要疾病之一。其臨床表現除了皮膚黏改變（如毛囊角化、角膜軟化等）和影響視網膜上視紫紅質更新引起夜盲 ...

Night Blindness        The Ancient Egyptians and Greeks wrote about night blindness, or ‘nyctalopia’. This affliction makes it impossible to see in dim light, and sufferers become completely blind when night falls. The Egyptians found that they could cure sufferers by feeding them liver, which contains high levels of vitamin A, the deficiency of which causes night blindness. Vitamin A deficiency still affects one third of all children on Earth under the age of five, resulting in over half a million deaths each year. Most high dose vitamins obtain their vitamin A from liver, which is dangerous at high levels and can cause various health complications. In the past, starving Antarctic explorers would eat their dogs for food but became sick when they ate too much liver. Vitam...