Supplement Reviews  |  Fat Burners & Weight Loss  |  Bodybuilding Guides  |  Training & Workout  |  Health & Nutrition  |  Diet & Fitness Articles  |  User Reviews

Health & Supplements

5 Steps To Back Pain Relief
Acai Berry Juice Review
Acai Berry Studies
Acetyl L-Carnitine Information
Aloe Vera Juice, Gel & Health
Alpha Lipoic Acid Info
Amino Acid Supplment
Arginmax for Men Review
Arginmax for Women Review
Artichoke Leaf Extract
Ashwagandha Extract
Astragalus Root Herb
Back Pain Treatment
Back Pain Relief - Lower Back Pain
Black Cohosh Side Effects
Black Cohosh Benefit & SIde Effects
Blood Tests - Understanding 1
Blood Test - Understanding 2
Borage Oil GLA Benefits
Bromelain Quercetin Benefits
Calcium Supplement Benefit
Calcium Deficiency
Cause of Lower Back Pain
CoEnzyme Q10 - CoQ10 Info
Coral Calcium Supplement
Damiana Leaf & Herb Extract
Degenerative Disc Disease
Echinacea Golden Seal
Flax Seed Oil Health Benefits
Ginkgo Biloba Information
Ginseng Root Benefit
Glucosamine Chondroitin
Grape Seed Extract Benefits
Green Tea Extract Benefits
Guggul Extract - Guggulsterone
Herbalife Prelox Blue Review
Herniated Disc Treatment
Herniated Disc & Back Pain
Joint Pain & Joint Health - 1
Joint Pain & Joint Health - 2
Lactobacillus Acidophilus
Lifezyme Plus - Pain Relief
L-Arginine Benefit & Side Effects
L-Lysine Cold Sore & Benefits
L-Taurine Benefit & Side Effects
L-Tryptophan 5 HTP & Depression
Monavie Acai Juice Drink Review
Milk Thistle Benefit & Side Effects
Mineral Supplements and Health
Omega 3 Fish Oil Supplement
Piriformis Syndrome - Sciatic Pain
Pycnogenol Benefits & Side Effects
Saw Palmetto Herb Extract
Soy Protein Powder Benefits -1
Soy Protein Powder Benefits -2
Zrii Amalaki Drink Review

Vitamin Guides & Articles

Vitamin for Acne Treatment
Vitamin A & Beta Carotene
Vitamin A Deficiency & Carotene
Vitamin B Complex Benefit
Vitamin B1 Thimaine
Vitamin B1 Thiamine Deficiency
Vitamin B2 Riboflavin
Vitamin B2 Riboflavin Deficiency
Vitamin B3 Niacin
Vitamin B3 Niacin Deficiency
Vitamin B5 Pantothenic Acid & Acne
Vitamin B5 Pantothenic Acid Benefit
Vitamin B6 Pyridoxine
Vitamin B6 Pyridoxine Health Benefit
Vitamin B7 Biotin & Hair Loss
Vitamin B7 Biotin Deficiency
Vitamin B9 Folic Acid Pregnancy
Vitamin B9 Folic Acid Deficiency
Vitamin B12 Benefit & Side Effects
Vitamin B12 Deficiency & Symptoms
Vitamin C Ascorbic Acid
Vitamin C Health Benefits
Vitamin C Deficiency Symptoms
Vitamin C and Vitamine E
Vitamin D Benefits
VItamin D Deficiency Symptoms
Vitamin E Health Benefit
Vitamin E Deficiency Symptoms
Vitamin K Food & Benefit
Vitamin K Deficiency Symptoms
Vitamin K Supplements

Vitamin A, Carotene and Retinol

What are Retinol and Carotene? How do they relate to Vitamin A?

When people first discovered Vitamin A, they figured the only way to intake this useful element was to eat many animal parts such as animal livers. Because these food sources provide us rich "performed" Vitamin A, which means we can use it immediately after eating them. The "performed" Vitamin A is called Retinol.

However, not every one of us would enjoy eating animal livers everyday. Therefore, people started to look into the different food sources, and we found the magical component from the yellow, orange and red plant foods - "Carotenes". Enzymes can easily convert some intake Carotenes into Vitamin A in our liver. And the converted amount is just enough for your health requirement.

Closer Look at Carotene - Alpha Carotene & Beta Carotene

There are many different kind of Carotenes, but for Vitamin A's concern, only two kinds of Carotenes need to be studied here - Alpha Carotene and Beta Carotene. Beta Carotene is largely contained in the yellow, orange and red color plant foods, and it is used in two areas:

1). Part of Beta Carotene converts into sufficient Vitamin A for your body needs. Since your own Enzyme does the job, therefore, only the needed amount of Vitamin A will be produced from the Beta Carotene. It is harmful to overdose Vitamin A sometimes, but it's never harmful to have excess amount of Carotenes. The non-used Carotenes are stored in the fatty tissues and ready to be converted into Vitamin A when ever it is needed.

2). The rest of the non-converted beta Carotenes can also be used to extinguish the singlet oxygen in our body, which prevents us from getting Cancer! Yes, Carotene itself is also a cancer-fighting agent. From this point of view, Alpha Carotene does a much better job than the Beta Carotene. To be precise, Alpha Carotene can be 10 times more effective in eliminating free radicals for our body.

Among the many different kinds of carotene supplements, we suggest the Carotenoid Complex supplement which contains Vitamin A as Beta-Carotene 25,000IU from Country Life. This supplement contains additional antioxidant carotenoids Lutein and Zeaxanthin, and natural alpha-carotene.

>> Click here for Vitamin A

Do You Need Vitamin A Supplements?

If you eat the following food regularly, then you are unlikely to be deficient in Vitamin A: Liver (Pork, Beef or other animal livers), Milk, Carrots, Spinach, Watermelon, Pumpkin, Asparagus etc.

If you are uncertain of weather your have enough Vitamin A in your body, we recommend you take some extra Beta Carotene just in case. Remember, Beta Carotene overdose is not harmful, it may turn your skin into orange color, but it's safe.

Who are likely to be deficient in Vitamin A?

1). Anyone with inadequate caloric or nutritional dietary intake or increased nutritional requirements
2). Those who abuses alcohol or other drugs
3). People with a chronic wasting illness or prolonged fever
4). Those under excess stress for long periods
5). Anyone who has recently undergone surgery
6). People with recent severe burns or injuries
7). Malnourished children with impaired immunity

Vitamin A Deficiency Symptoms

Below are possible symptoms of Vitamin A deficiency:

  • Night blindness
  • Lack of tear secretion
  • Changes in eyes - eventual blindness if deficiency is severe and untreated
  • Susceptibility to infectious diseases, especially respiratory
  • Dry, rough skin
  • Weight loss
  • Poor bone growth
  • Weak tooth enamel
  • Diarrhea
  • Slow growth
  • Acne
  • Insomnia

>> Click here for Vitamin A