[B] precedes A

The article on antioxidants gave a brief account on the nature of antioxidants and their invaluable role in the human body. To continue with that theme, I thought it was fitting to have a discussion on an important class of these powerful nutrients. The title of today’s article may appear contrary to reason, however, makes perfect sense in the world of antioxidants. At this point, it is known that beta carotenes are a class of powerful antioxidants but what might not be common knowledge is the fact that beta carotenes make the well known and equally important vitamin A, making them provitamins.

Nature of [B]eta carotenes

Beta carotenes are a sub-class of substances called carotenoids, which provide color to plants. See plant pigments. So every time one sees the bright red, yellow, or orange color of plants, think beta carotenes!  Beta carotenes are less conspicuously found in green leafy vegetables where their brightness is concealed by the presence of chlorophyll. Like all carotenoids, beta carotenes are chemically very fragile, so one should refrain from overheating or over cooking foods that contain them.

Food sources of [B]eta carotenes

Food sources of these nutrients vary tremendously. Tip: Buy food that’s in season. They include, but not limited to carrots, spinach, turnips, turnip greens, winter squash (see: Chicken and Wild Rice Butternut Squash Soup recipe), pumpkin, cantaloupe, etc…

Toxicity

Consider food sources of beta carotene instead of supplemental sources, unless, otherwise prescribed by your physician. Beta carotenes are important for the body as they contribute to healthy vision, skin and immune system. However, when consumed in excess, beta carotenes can lead to skin discoloration among other health problems. Adequate consumption is key!

Sources:
http://www.mayoclinic.org/drugs-supplements/beta-carotene/background/hrb-20058836
http://www.nlm.nih.gov/medlineplus/druginfo/natural/999.html
http://www.ncbi.nlm.nih.gov/pubmed/10850526   Photo credit: Parrynutraceuticals, Alfajr-news.net 
http://www.bloglovin.com/blog/11895885/?claim=p8ay956p6sj">Followref="http://www.bloglovin.com/blog/11895885/?claim=p8ay956p6sj">Follow my blog with Bloglovin</a>