The pancreas secretes enzymes that help absorb the fat in the body. Without these enzymes, our bodies are less able to absorb fat-soluble nutrients such as vitamin A. Read also: Accelerate metabolism with 5 vitamins and minerals.
Children: some children living in Western countries, for reasons still unknown and subject of various studies in progress, more difficult to store vitamin A. These children are at risk of vitamin A. Children subject to the risk include very young children, preschool children, children living below the poverty line, children without immunization, children who are recent immigrants from developing countries, children with disease of the pancreas, liver or intestines. Read also: Vitamins are not automatic for children.
Thursday, October 7, 2010
What types of people at risk of vitamin A?
Although vitamin A deficiency are rare, several groups of people may miss this important nutrient. Read also: Nutrient Deficiencies: top 5 nutritional deficiencies.
Vegetarians and vegans: because preformed vitamin A from animal foods is more available to be absorbed by the body than carotenoids from plant foods, vegetarians will have more difficulty in obtaining their nutritional recommended daily vitamin Vegans are at even higher risk. Also read: Lose weight with diet vegetarian / vegan.
Drinking alcohol drinking too much alcohol reduces stores of vitamin A in the liver, thus reducing the overall amount that is in the body. Read also: Alcohol and blood sugar: 9 tips to manage.
People suffering from digestive diseases: people who suffer from celiac disease, Crohn's disease or irritable bowel syndrome have a higher frequency DIARRHEA (one of the main ways for vitamin A to be excreted from the body) and lower rates of absorption of vitamin A. Read also: Celiac disease: food for people with celiac disease.
Vegetarians and vegans: because preformed vitamin A from animal foods is more available to be absorbed by the body than carotenoids from plant foods, vegetarians will have more difficulty in obtaining their nutritional recommended daily vitamin Vegans are at even higher risk. Also read: Lose weight with diet vegetarian / vegan.
Drinking alcohol drinking too much alcohol reduces stores of vitamin A in the liver, thus reducing the overall amount that is in the body. Read also: Alcohol and blood sugar: 9 tips to manage.
People suffering from digestive diseases: people who suffer from celiac disease, Crohn's disease or irritable bowel syndrome have a higher frequency DIARRHEA (one of the main ways for vitamin A to be excreted from the body) and lower rates of absorption of vitamin A. Read also: Celiac disease: food for people with celiac disease.
Vitamin A Deficiency: Signs and symptoms
Most adults have a reserve of vitamin A in their livers (as a fat-soluble nutrient, vitamin A is preserved in the fattest parts of the body). So vitamin A are rare but not impossible. Signs that you may lack vitamin A include:
* Hyperkeratosis, an appearance similar to goose bumps on the skin,
* Increased sensitivity to viral infections,
* Decreased night vision, photophobia,
* Night-blindness, night blindness, hespéranopie,
* Hair loss,
* Loss of appetite,
* Abnormal bone
* Slow growth.
* Hyperkeratosis, an appearance similar to goose bumps on the skin,
* Increased sensitivity to viral infections,
* Decreased night vision, photophobia,
* Night-blindness, night blindness, hespéranopie,
* Hair loss,
* Loss of appetite,
* Abnormal bone
* Slow growth.
Benefits of Vitamin A
Vitamin A is a large group of fat-soluble compounds (soluble in lipids but insoluble in water) that promote good vision, bone growth, reproduction and cell growth. Vitamin A also keeps your immune system in good shape by protecting the walls of your lungs and intestinal tract and producing white blood cells (cells of human blood contains a nucleus, also called leukocytes, which mainly plays a role in defense the body against foreign agents). Read also: Immune system: how to strengthen the immune system?
There are two types of vitamin A:
* Preformed: preformed vitamin A is derived exclusively from foods of animal origin (meat, fish, eggs, dairy products, etc..). It is absorbed as retinol (the form most useful to vitamin A) and esters of retinol,
* Carotenoids: Vitamin A-like carotenoids from fruits and vegetables , and must be converted to retinol by the body. There are over 560 carotenoids in nature, but the body still absorbs less than 10%. One of the most important carotenoids is beta-carotene, an important nutrient that can prevent certain diseases like cancer.
There are two types of vitamin A:
* Preformed: preformed vitamin A is derived exclusively from foods of animal origin (meat, fish, eggs, dairy products, etc..). It is absorbed as retinol (the form most useful to vitamin A) and esters of retinol,
* Carotenoids: Vitamin A-like carotenoids from fruits and vegetables , and must be converted to retinol by the body. There are over 560 carotenoids in nature, but the body still absorbs less than 10%. One of the most important carotenoids is beta-carotene, an important nutrient that can prevent certain diseases like cancer.
Vitamin A: Benefits, shortcomings, foods rich in vitamin A
Vitamin A is an essential vitamin. Discover its benefits, what causes vitamin A, vitamin rich foods ..
Vitamin A is a super nutrient that provides numerous benefits according to recent studies. Vitamin A plays an important role in the prevention or treatment of dozens of health problems including acne, cataracts, osteo-arthritis, psoriasis, ulcers, varicose veins, etc.. It is therefore important not to suffer from vitamin A deficiency, and eat enough foods rich in vitamin A daily. Read also: Vitamins for weight loss, vitamins for weight loss.
Vitamin A is a super nutrient that provides numerous benefits according to recent studies. Vitamin A plays an important role in the prevention or treatment of dozens of health problems including acne, cataracts, osteo-arthritis, psoriasis, ulcers, varicose veins, etc.. It is therefore important not to suffer from vitamin A deficiency, and eat enough foods rich in vitamin A daily. Read also: Vitamins for weight loss, vitamins for weight loss.
Friday, October 1, 2010
Asthma
Symptoms and Complications
Some children feel a tingling on the back of the neck just before an asthma attack. People observe warning signs that they can learn to interpret. Some of them, such as sore throat, are obvious while others, such as sunken eyes, a feeling of tiredness, irritability or discoloration of the face, may go unnoticed.
Asthma also varies in intensity. Asthma symptoms may still be present or occur only upon exposure to allergens. Whatever the severity of asthma, typical symptoms include:
* Tightness in the chest;
* Cough,
* Shortness of breath;
* Wheezing.
In cases with more severe asthma, these symptoms may occur at night.
Wheezing is a symptom of asthma, the best known, but the expiration of all people with asthma do not necessarily become wheezy. Some people only have a cough, but they can not discipline her.
A really severe asthma attack can present a mortal danger. Even if air reaches the lungs, the accumulation of carbon dioxide in the blood can be fatal. If you can not breathe, or if it is for a family member, call 911 or call-your neighborhood, especially if the medication does not effect normal.
Some children feel a tingling on the back of the neck just before an asthma attack. People observe warning signs that they can learn to interpret. Some of them, such as sore throat, are obvious while others, such as sunken eyes, a feeling of tiredness, irritability or discoloration of the face, may go unnoticed.
Asthma also varies in intensity. Asthma symptoms may still be present or occur only upon exposure to allergens. Whatever the severity of asthma, typical symptoms include:
* Tightness in the chest;
* Cough,
* Shortness of breath;
* Wheezing.
In cases with more severe asthma, these symptoms may occur at night.
Wheezing is a symptom of asthma, the best known, but the expiration of all people with asthma do not necessarily become wheezy. Some people only have a cough, but they can not discipline her.
A really severe asthma attack can present a mortal danger. Even if air reaches the lungs, the accumulation of carbon dioxide in the blood can be fatal. If you can not breathe, or if it is for a family member, call 911 or call-your neighborhood, especially if the medication does not effect normal.
Tuesday, September 28, 2010
Allergic rhinitis
Description
Sometimes called hay fever or pollinosis, allergic rhinitis called affection literally means "allergic nose inflammation. It owes its name to the element that comes from the Greek rhin "nose" and the ending-itis, which refers simply to inflammation.
Allergic rhinitis can last a season or all year. For most people, an allergen (something that causes an allergic) triggers symptoms at about the same time each year. In spring, their operation is usually due to tree pollen, while grass pollens dominate in the summer, and those weeds in the fall. Most people with allergic rhinitis are more sensitive to an allergen.
Chronic allergic rhinitis occurs all year round. This condition is more common in people who react to allergens throughout the year. Obviously, people allergic to dust mites or their pets suffer whatever the season. Allergic rhinitis affects approximately 20% of Canadians.
Sometimes called hay fever or pollinosis, allergic rhinitis called affection literally means "allergic nose inflammation. It owes its name to the element that comes from the Greek rhin "nose" and the ending-itis, which refers simply to inflammation.
Allergic rhinitis can last a season or all year. For most people, an allergen (something that causes an allergic) triggers symptoms at about the same time each year. In spring, their operation is usually due to tree pollen, while grass pollens dominate in the summer, and those weeds in the fall. Most people with allergic rhinitis are more sensitive to an allergen.
Chronic allergic rhinitis occurs all year round. This condition is more common in people who react to allergens throughout the year. Obviously, people allergic to dust mites or their pets suffer whatever the season. Allergic rhinitis affects approximately 20% of Canadians.
