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The discovery dates of the vitamins and their sources Year of discovery Vitamin Food source 1913: Vitamin A (Retinol) Cod liver oil: 1910: Vitamin B 1 (Thiamine) Rice bran: 1920: Vitamin C (Ascorbic acid) Citrus, most fresh foods 1920: Vitamin D (Calciferol) Cod liver oil 1920: Vitamin B 2 (Riboflavin) Meat, dairy products, eggs: 1922: Vitamin ...
The Greatest Benefit to Mankind: A Medical History of Humanity from Antiquity to the Present. Harper Collins. ISBN 0-00-215173-1. Porter, Roy, ed. The Cambridge History of Medicine (2006); 416pp; excerpt and text search. Porter, Roy, ed. The Cambridge Illustrated History of Medicine (2001) excerpt and text search excerpt and text search
The history of USDA nutrition guidelines includes over 100 years of nutrition advice promulgated by the USDA (United States Department of Agriculture). The guidelines have been updated over time, to adopt new scientific findings and new public health marketing techniques. The current guidelines are the Dietary Guidelines for Americans 2020 ...
Best case scenario, the average shelf-life of vitamins is two years, Davis-Cadogan adds. There are some vitamins that come with special storage instructions, so it’s important to thoroughly read ...
1826 – Karl von Baer showed that the eggs of mammals are in the ovaries, ending a 200-year search for the mammalian egg. 1828 – Friedrich Woehler synthesized urea; first synthesis of an organic compound from inorganic starting materials. 1836 – Theodor Schwann discovered pepsin in extracts from the stomach lining; first isolation of an ...
Ancient history – Aggregate of past events from the beginning of recorded human history and extending as far as the Early Middle Ages or the Postclassical Era. The span of recorded history is roughly five thousand years, beginning with the earliest linguistic records in the third millennium BC in Mesopotamia and Egypt .
Lists of years or Tables of years are indexes that list all of the individual timelines by year that pertain to a specific topic. Timespans next to the timeline articles listed here include the date of the earliest item included in the linked timeline article.
Walt Disney Co. is celebrating its 100th anniversary on Oct. 16. Here's a timeline of key events in the Burbank company's history.