Top Posters
Since Sunday
r
4
L
4
3
d
3
M
3
l
3
V
3
s
3
d
3
a
3
g
3
j
3
Home Q & A Board Biology-Related Homework Help Biochemistry
New Topic  
bvinson19 bvinson19
wrote...
Go to Answer
Posts: 6
Rep: 0 0
11 years ago
why do you need a certain amount of thiamine and riboflavin in your diet every day, but not vitamin A & D?
Read 367 times
4 Replies
Replies
wrote...
#1
11 years ago
You are sadly mistaken--an insufficiency of either one, and certainly of both, is a virtual guarantee of bad health. A can be abused by doses that are too massive. D3 is not retained by the body, is flushed out all the time, and must be taken daily in substantial doses if you get little sun or have certain skin criteria. Please Google Vitamin A and Vitamin D3 and get some information before you assume anything or ask any more questions.
Answer accepted by topic starter
DeAnne99999DeAnne99999
wrote...
#2
Posts: 6
Rep: 0 0
11 years ago
Sign in or Sign up in seconds to unlock everything for free
This verified answer contains over 180 words.
1

Related Topics

wrote...
#3
11 years ago
Thiamine (B1), riboflavin (B2), the rest of the B vitamins and vitamin C are not stored in the body.  They need to be 'replenished' every day.  Vitamin A (retinol), vitamin D (calcitriol) along with vitamin E (ergocalciferol) and vitamin K (phytonadione) are 'fat soluble' vitamins and can be stored, to some degree, in the body.  While these vitamins need to be replaced, the body can draw from these stores within the body.

EDIT:  Doc J is correct, I humbly stand, partially corrected.  Busy day, sorry.  Vitamin E is d-alpha-tocopherol.  From a Pharmaceutical standpoint, phytonadione (Mephyton) is the tablet form of vitamin K and Aqua-Mephyton is the injectable form.  Rocaltrol (calcitriol) and Drisdol (ergocalciferol) are the oral forms of vitamin D.  Aquasol E is the oral form of vitamin E.  Aquasol A is the oral form of vitamin A.
wrote...
#4
11 years ago
One cannot generalize, for example

B12 is a B vitamin and water soluble but stored for months in the liver.  Vitamin K is produced by bacteria in the gut so is less essential in the diet.

Other than that, the reasons given above are correct.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1750 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 257
  
 277
  
 213