Why is vitamin A necessary
 
Geneva:
+4122 840 33 34
 
Moscow:
+7(903)720 80 57

Nutrition: why is vitamin A necessary

Date: 21/04/2016
Last edited: 27/04/2016

Vitamin A actually is a group of antioxidant compounds that play an important role in vision, bone growth and health of the immune system. They occur naturally in both plant and animal tissues.

In general, there are two types of vitamin A, depending on the type of food source it comes from:

  • Vitamin A from animal-derived foods is called retinol. This “pre-formed” vitamin A can be used directly by the body. Good food sources of retinol vitamin A include beef and chicken liver, whole milk and cheese.
  • Vitamin A obtained from colorful fruits and vegetables is in the form of “provitamin A” carotenoids, which are converted to retinol by the body after the food is ingested. Good food sources of provitamin A carotenoids include carrots, sweet potatoes, spinach, kale and cantaloupes.

Beta carotene is one of the most prevalent and effective provitamin A carotenoids.

Vitamin A plays a vital role in bone growth, reproduction and immune system health. It also helps the skin and mucous membranes repel bacteria and viruses more effectively. It is essential to healthy vision, and may slow declining retinal function in people with retinitis pigmentosa.

A vitamin A deficiency in adults can provoke an ocular disease, reduced resistance to infections and / or dryness of the skin.

Foods rich in vitamin A are cod liver oil, egg yolk, carrots, spinach, tomatoes and beans. Supplementation with vitamin A or cod liver oil can also be provided

Comments
Articles
Patient registration form
Topics
Examination Incorpore
age management
Anti-aging
prevention
weight management
oncology
weight loss
detoxification
nutrition
cancer
allergy
dermatology
skin
diagnosis
oncology treatment
cardiology
heavy metal
immunology
cosmetology
Fertility
check-up
Genetics
DNA
liver detox
gynecology
Blood pressure
heart MRI
pain
skincare
stem cells
Allergology treatment
urology
Allergology
infertility
liver
gastroenterology
Examination partner centres
covid19
chelation
Sleep
breast cancer
headache
tinnitus
NAD+
arsenic
immunotherapy
neurology
obstetrics
candida
rehabilitation
probiotics
radiology
joints
immune system
andropause
mesotherapy
Apnea
Hepatitis C
pregnancy
dermatitis
hyaluronic acid
pneumology
biopsy
preventiion
ulcer
cellcosmet
pomegranate
endocrinology
Дерматология
oral checkup
vitamin b12
sugar
light therapy
migraines
food
mammography
gastroscopy
cellmen
proctology
liquid biopsy
rheumatology
herniated disc
vitamin K
sexuality
digestion
acnea
anti-aging
gastritis
reflexology
chronic headaches
stress
orthopedics
flu vaccine
nutrigenomics
rhesus factor
diet
menopause
PRP
endometriosis
kidney
intestinal flora
beauty
brain surgery awake
acne
ophthalmology
depression
exercise
knee
beau-rivage
narcosis
LED therapy
plastic surgery
diabetes
iron
sports
excimer laser
lungs
food intolerances
second opinion
cholesterol
psoriasis
abdominal pain
hand
migraine
hormones
colonoscopy
flu
mercury
research
mastectomy
magnesium
water
pancreas
oncoloy
cellulite
nephrology
R-loops
telomere
obstertics
reconstruction
general surgery
propofole
Omega-3
back pain
blood test
shoulder
hip
regeneration
erectile dysfunction
Treatment programs