HES 2823 1st Edition Lecture 17 Outline of Last Lecture I. VitaminsA. Purified Diet and Early Understanding of NutritionB. Characteristics of VitaminsC. Fat Soluble Vitamins1. Vitamin AOutline of Current Lecture I. Fat Soluble Vitamins (continued)A. Vitamin A (continued)1. Deficiency2. Food Source3. ToxicityCurrent LectureI. Fat Soluble Vitamins (continued)A. Vitamin A (continued)1. Deficiencya. The body can store months’ supplies so this is relatively rareb. Night blindness: inability to see in dim lighti. Compounds sensitive to the wavelength of dim light are the first to fail with this conditionii. Reversible upon intake of vitamin A, if no long term damage has already occurredc. Xeropthalmia: dry, cracked cornea causing light entering the eye to scatter and miss the retinai. Irreversible and causes blindnessii. Cornea becomes cloudy or bumpyiii. Leading cause of blindness within the world2. Food Sourcea. Liverb. Beta-carotene rich sources (yellow-orange pigment)i. Carrotsii. Sweet potatoesiii. Cantaloupe iv. PapayaThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.v. Mangovi. Apricotvii. Persimmonsviii.Pumpkin piec. Fortified sources (the addition of a nutrient above what is naturally present): milk3. Toxicity (too much intake)a. This vitamin can kill a human when taken in excessb. Acute: 50x the Recommended Daily Allowance (RDA)i. Through pills and supplementsii. Cerebral spinal fluid increases involume and thus pressure builds from the inside outiii. It begins with a headache, which becomes delirium and can then cause a coma and even
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