This isn’t an easy topic to write about nor is it an easy topic to find information about since it’s quite complex, however, we will share with you as much information as possibly can about this subject so that you no longer have any questions left un-answered by the end of this article.
Antioxidants
Antioxidants are substances that may prevent or delay some types of cell damage. Examples include beta-carotene, lutein, lycopene, selenium, and vitamins C and E. They are found in many foods, including fruits and vegetables. Most research has not shown antioxidant supplements to be helpful in preventing diseases.
Source: National Institutes of Health, Office of Dietary Supplements.
Biological Significance Of Vitamins
Some of the first evidence for the existence of vitamins emerged in the late 19th century with the work of Dutch physician and pathologist Christiaan Eijkman. He noticed that the disease was similar to the polyneuritis associated with the nutritional disorder beriberi.
In 1906–07 British biochemist Sir Frederick Gowland Hopkins observed that animals cannot synthesize certain amino acids and concluded that macronutrients and salts could not by themselves support growth. In 1912—the same year that Hopkins published his findings about the missing nutrients, which he described as “accessory” factors or substances—a Polish scientist, Casimir Funk, demonstrated that polyneuritis produced in pigeons fed on polished rice could be cured by supplementing the birds’ diet with a concentrate made from rice bran, a component of the outer husk that was removed from rice during polishing. Funk proposed that the polyneuritis arose because of a lack in the birds’ diet of a vital factor (now known to be thiamin) that could be found in rice bran.
Funk believed that some human diseases, particularly beriberi, scurvy, and pellagra, also were caused by deficiencies of factors of the same chemical type.
Discovery And Original Designation
He noticed that the disease was similar to the polyneuritis associated with the nutritional disorder beriberi. In 1897 he demonstrated that polyneuritis was caused by feeding the chickens a diet of polished white rice but that it disappeared when the animals were fed unpolished rice.
Funk proposed that the polyneuritis arose because of a lack in the birds’ diet of a vital factor (now known to be thiamin) that could be found in rice bran. Funk believed that some human diseases, particularly beriberi, scurvy, and pellagra, also were caused by deficiencies of factors of the same chemical type.
Definition Of Vitamin
Did You Remember To Take Your Vitamin?
— Ariel Scotti, Health.com, 23 Sep. 2021
And citrus fruits, broccoli, strawberries and tomatoes are rich in vitamin C. — Kristen Rogers, CNN, 19 Aug. 2021
Thinning hair: Those with thinning hair will want to look for thickening shampoos that contain biotin, minoxidil, caffeine or vitamin B3. — Andie Kanaras, Travel + Leisure, 23 Dec. 2021
Among the many vitamins and omega fatty acids in this body-smoother, vitamin B3 plays a pivotal role. — Stanley Stepanic, The Conversation, 14 Oct. 2021
These example sentences are selected automatically from various online news sources to reflect current usage of the word ‘vitamin.’.