Health » beta-carotene

Nutrition vitamins:Vitamin A (retinol and beta-carotene)

admin — Tue, 20 Sep 2011 11:16:03 +0000

Vitamin A and carotene from the vegetable or animal sources. The animal form is divided between retinol and carotene dehydroretinol while the plant it can be very powerful in four groups – alpha-carotene, beta carotene, gamma-carotene and crypto-carotene. With enough beta-carotene in the body, the body can manufacture its own vitamin A.

Vitamin A is required for night vision, and for a healthy skin. Assists the immune system, and due to their antioxidant is great protection against the formation of pollution and cancer and other diseases. It also assists your sense of taste as well as support of the digestive and urinary tract and many believe it helps to slow aging.

Required for the development and maintenance of epithelial cells in the mucous membranes and skin and is important in the formation of bone and teeth, the storage of fat and protein synthesis and glycogen.

Vitamin A is required for

Vitamin A deficiency

A deficiency of vitamin A can lead to eye problems with dryness of the conjunctiva and cornea, dry skin and hair, night blindness and poor growth.

Dry itchy eyes that tire easily is usually a warning of too little vitamin A. If the deficiency becomes severe, corneal ulcers and can be permanent blindness can follow.

Abscesses forming in the ear, sinusitis, respiratory infections and common cold as well as disorders of the skin such as acne, boils and skin an uneven, as well as weight loss could be indicative of vitamin that was a source short.

Insomnia, fatigue, reproductive difficulties and may also be indicative of vitamin source short. Your hair and scalp can also become dry with a weakness, especially if the protein is also lacking.

The dosage underneath is the Recommended Dietary permission (RDA), but be aware that this dosage is the minimum that you require per day, to reject serious deficiency of this particular food. In the therapeutic use of this food, the dosage is usually increased considerably, but the level of toxicity must be considered.

Male 5000 IU per day (equivalent) 1,000 mg, females 4000 IU per day (equivalent to 800 mg of retinol), although 10,000 IU per day are normally used in supplementation.

Toxicity and symptoms of high product

Dosages that exceeded 15,000 IU per day should be taken under medical supervision. Toxicity may occur in some individuals at relatively low dosages and symptoms may include nausea, dizziness, menstrual problems, skin changes and dryness, the itchiness, irritability, vomiting, headaches and use of long term may cause pain of the loss of hair, bone and muscles, headache, liver damage, and increased concentrations of blood lipids.

Pregnant women should take care while a high product of this vitamin may cause birth defects.

Provitamin A – beta-carotene does not cause toxicity.

Be careful if you operate in the unlikely event through a menu refers polar – 500 grams (about ½ pound) of polar bear liver will deliver about 9,000,000 IU to your diet – a very lethal dose. Headaches, blurred vision, hair loss, drowsiness and diarrhea, enlargement of the spleen and liver could all be indications when your product is too high.
Best used with

Take vitamin A with the B-group vitamins, vitamins C, D and E, choline, essential fatty acids with calcium, phosphorus and zinc for the best results.
When more may be required

More of this vitamin is required when you consume alcohol in a low-fat diet or a diet high of polyunsaturated fatty acids, if you smoke or live in a contaminated area. It may also be indicated if you suffer from diabetes or a thyroid gland under-active. Beware of vitamin A in pregnancy.

Enemy of vitamin A

Retinol is destroyed by light, high temperatures and using copper or iron cookware. Vehicles and fruit rich beta carotene should not be soaked in water for long periods, since the food may be lost like that.
Other interesting points

There seems to be toxic to ingest quantities of beta carotene grand – you might however have a slightly orange skin, such as the carotene gets stored on your skin.
Food sources of vitamin A

The liver, milk, egg yolk, carrots, dark green leafy vehicles and yellow fruits are high in vitamin A or beta carotene.

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How Beta-Carotene Vitamin Works in Your Body

admin — Sat, 10 Oct 2009 04:31:56 +0000

Vitamin A is normally found as Beta-Carotene and Retinol and converted to Vitamin An in the body.
These previtamins are generally found in plants, liver, egg yolk, cheese, and milk.

Aids in conduct of some eye disorders, counting prevention of night blindness and formation of visual purple in the eye
Promotes bone lump, teeth development, reproduction
Helps form and swear healthy skin, fleece, mucous membranes
Builds body’s resistance to respiratory and other infections (including measles in the third world)
May help regard acne, impetigo, boils, carbuncles and open ulcers when practical externally

May help oppress glaucoma
Potential protector against things of pollution and smoke—beta-carotene acts as an antioxidant (see Glossary)
May tempo healing
Possibly helps remove age spots
May farther immunity
May help settle skin lesions, cuts and wounds
Possible healing for hyperthyroidism

Who Should Take This:
Any one with inadequate caloric or nutritional dietary intake or augmented nutritional requirements
Those who abuse alcohol or other drugs
People with a habitual killing illness or prolonged fever
Those under leftover stress for long periods
Anyone who has newly undergone surgery
People with novel acute burns or injuries
Malnourished children with impaired immunity

Where This Vitamin is Found:
Apricots, fresh
Asparagus
Broccoli
Cantaloupe
Carrots
Eggs
Endive, raw
Kale
Leaf lettuce
Liver
Milk
Mustard greens
Pumpkin
Spinach
Squash, iciness
Sweet potatoes
Tomatoes
Watermelon

How to Use:
Available as:
Liquid: the best form due to its high bioavailability and brief absorption. Always show liquid as your first diversity when supplementing your diet.

Tablets: presented

Recommended Daily Intakes
Men: 1000 mcg RE (3333 IU)
Women: 800 mcg RE (2666 IU)
Pregnancy: 800 mcg RE (2666 IU)
Lactation: +500 mcg RE (1666 IU)

Cautions:
Consult your physician if you have:
Cystic fibrosis
Diabetes
Intestinal disease with diarrhea
Kidney disease
Liver disease/liver enlargement
Overactive thyroid serve
Disease of the pancreas
Viral hepatitis
Chronic alcoholism
Pregnant
Lactating

Over 55:
Take tenderly to duck toxicity.

Pregnancy:
Always consult surgeon during pregnancy. Keep within DRI.

Breastfeeding:
Always consult surgeon during lactation. Keep within DRI.

Storage:
Heat and/or damp may rework the vitamin. Refrigeration is recommended.

Symptoms of Deficiency:
Symptoms compose night blindness, require of tear emission, changes in eyes—eventual blindness if deficiency is rigorous and whole, susceptibility to infectious diseases, especially respiratory, dry, vague skin, influence hurt, needy bone cyst, weak incisor enamel, diarrhea, dense evolution, acne, insomnia, and weariness.

Overdose:
Signs of Overdose:
Bleeding from gums or sore swagger
Bulging malleable notice on journey in babies
Hydrocephaly (water on intellect”)
Confusion or atypical excitement
Diarrhea
Dizziness
Double image
Headache
Irritability
Dry skin
Hair slaughter
Peeling skin on lips, palms and in other areas;
Seizures
Vomiting
Enlarged annoyance and liver

Side Effects:
Reaction or provoke: What to do:
Abdominal ache End. Consult physician immediately.
Appetite damage Discontinued. Refer to your physician shortly.
Bone or linkage nuisance End. Consult surgeon immediately.
Discomfort, weariness or weakness End. Refer to your surgeon shortly.
Drying or cracking of skin or lips End. Consult surgeon immediately.
Fever End. Consult physician immediately.
Hair harm Discontinued. Consult surgeon immediately.
Headache End. Refer to your surgeon shortly.
Increase in frequency of urination End. Refer to your surgeon quickly.
Increasing sensitivity of skin to sunlight End. Refer to your doctor quickly.
Irritability End. Refer to your doctor quickly.
Vomiting End. Consult doctor immediately.

Interactions:
Interacts with: Combined stimulate:
Antacids Absorption of vitamin A decreased.
Calcium supplements May drop efficacy of calcium supplementation.
Cholestyramine, colestipol Absorption of vitamin An abridged.
Mineral oiled, neomycin Absorption of vitamin A summary.
Olestra-fat substitute Vitamin-An and beta-carotene absorption bargain.
Oral contraceptives Vitamin-The concentrations increased.
Vitamin E Reduce vitamin-E levels over time.
Tobacco/ Alcohol Decreases absorption of vitamin.

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