2/01/2009 6:17am, #11Originally Posted by Teh El Macho
Millions of people happily live into their 80s and beyond without taking a multivitamin or other quasi-scientific dietary suppliment their entire lives.!!RENT SPACE HERE FOR 10 VBUCKS PER LINE PER MONTH!!
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2/01/2009 3:05pm, #12
2/07/2009 5:54am, #13
- Join Date
- Mar 2007
thanks for the responses and sorry for the late reply.
the main reason i was asking was according to nutritiondata.com frozen carrots boiled have 16927IU of vitamin A which is 339% of my daily intake and way above the upper RDA limit. so i was wondering if that was correct since lately ive been adding 50g of carrots with my tea.
also i have nothing against multi vits, i currently take C,D, omega-3 sups. but the multi vit i take has a lot of vit a already and i dont want to be getting way more vit a then i need.
also veges have the added benefit of fiber and calories.
2/07/2009 1:18pm, #14
The problem is this:
-Vitamin A (retinol) is a fat-soluble vitamin
-The human body's not great at disposing of excess
-If you absorb more of it than your body can use or dispose of, your liver starts storing the excess (up to a year's worth, IIRC)
-Once your liver's absorbed all it can, you wind up with hypervitaminosis A, which is very bad news.
As such, you need to stay within a window of vitamin A consumption, and that window's very narrow relative to other vitamins (say, vitamin D).
But here's the kicker: to the best of my knowledge, carrots do not contain retinol. Instead, they contain a Vitamin A precursor called - get this - carotene.
Carotene can be converted into retinol by your body, but...
Retinol formation appears to be inversely influenced by previous vitamin A intake, the amount of material given and current vitamin A status.
In other words, you're unlikely to overdose on vitamin A solely by having a high intake of carotenes. You may get carotenoderma, which is... more noticeable, but less severe.