Dictionary » V » Vitamin a deficiency

Vitamin a deficiency

vitamin a deficiency

A nutritional condition produced by a deficiency of vitamin a in the diet, characterised by night blindness and other ocular manifestations such as dryness of the conjunctiva and later of the cornea (xerophthalmia). Vitamin a deficiency is a very common problem worldwide, particularly in developing countries as a consequence of famine or shortages of vitamin a-rich foods. In the united states it is found among the urban poor, the elderly, alcoholics, and patients with malabsorption.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Vitamin D absorption for different skin types

... an article and which mentioned how people with lighter skin synthesise vitamin D from the sun more easily than people with darker skin tones. I ... with darker skin are more susceptible to depression from vitamin D deficiency, or do people with darker skin naturally have a higher amount ...

See entire post
by Piggis
Tue Jul 08, 2014 10:29 pm
 
Forum: Human Biology
Topic: Vitamin D absorption for different skin types
Replies: 1
Views: 410

Extended sleeping

... months of lack of sun can cause depression or bad mood, but not likely vitamin D deficiency. Diet-related causes of fatigue include low blood levels of potassium, iron and ...

See entire post
by boron
Sat Nov 09, 2013 4:08 pm
 
Forum: Human Biology
Topic: Extended sleeping
Replies: 3
Views: 1448

Evolution and environment question--breathing, etc

... skin. Until the lighter skin comes along, they will suffer from partial Vitamin D deficiency. Anyways, this post is probably too long now - someone else will probably tell me ...

See entire post
by AstraSequi
Tue May 29, 2012 4:32 am
 
Forum: Evolution
Topic: Evolution and environment question--breathing, etc
Replies: 3
Views: 3461

Re: Stomach bloating and weight gain

... both rotator cuffs by just tossing a little cat toy). One visit my vitamin D was low so I was given the mass dosage. I had to repeat this twice, ... isn't my thyroid. She tested blood again and found I had a Vitamin B-12 deficiency and ordered me to take 1000 mcg a day. Didn't help still bloated. ...

See entire post
by CureIt
Wed Feb 29, 2012 12:30 pm
 
Forum: Physiology
Topic: Stomach bloating and weight gain
Replies: 452
Views: 2677771

Unsolved medical issue

... symptoms, but I still get a nose bleed now and then. As far as I know, vitamin K deficiency is rare with people that have normal diets, but there is probably no harm in trying ...

See entire post
by biohazard
Thu Jun 30, 2011 6:44 am
 
Forum: Genetics
Topic: Unsolved medical issue
Replies: 1
Views: 2754
View all matching forum results

This page was last modified 21:16, 3 October 2005. This page has been accessed 772 times. 
What links here | Related changes | Permanent link