Decreased
Vitamin D Levels
in pregnancy are linked to asthma in their offspring.Children with asthma who had low levels of Vitamin D were more likely to have flare-upsThe receptor for Vitamin D might even control the GENE responsible for asthma Moderate and careful sunlight exposure is the best way to get some of your Vitamin D, but unless you work outdoors regularly, your exposure is probably inadequate.

While most recommendations on
Vitamin D Dosages
state a conservative 400-800 IU daily for adults, new research is showing that higher doses are needed to promote optimal blood levels in most people.
The third National Health and Nutrition Examination Survey suggests 3800 IU - 5000 IU a day!!! This is 10 times the US RDA of 400 IU !!! If you choose to supplement with Vitamin D, look for it in the form of
Vitamin D3 Supplements.
This form is MUCH easier for the body to convert than the more common Vitamin D2.
Vitamin E
Vitamin D and Vitamin E are linked in many ways so researchers find in difficult to determine which vitamin influenced the results in studies. While few studies have specifically looked at the role of Vitamin E in adults, asthma and nutrition are definitely connected.
A recent study concluded, "Higher concentrations of vitamin E intake were associated with... lower frequency of allergen sensitization [in asthma and allergic diseases]."
However, of interest to asthmatics is a study done on the elderly in nursing homes that showed improved immune function and fewer colds with supplementation of 200 IU per day. As always, it's best to get Vitamin E from natural food sources that include
• Green leafy vegetables
• Nuts and seeds
• Whole grain breads and cereals
• Vegetable and Nut oils
The US RDA of Vitamin E is 15 mg/22.5 IU. While most Americans are not clinically deficient, most of us do not get this RDA- and even if you do, asthmatics may very well have a much higher need for this nutrient than non-asthmatics.
If you choose to take supplements, look for high qualityVitamin E Supplements in the form of 'mixed tocopherols' as this form is the most 'bioavailable' and identical to the Vitamin E in foods. 'Synthetic' vitamin e labeled 'Vitamin E' is NOT recommended. Most clinical studies that showed benefits from vitamin e use between 200 to 400 IU per day without toxicity.
Vitamin AVitamin A is the last of the fat soluble vitamins that we will discuss in relation to asthma and nutrition. Levels of Vitamin A are significantly lower in children and adults with asthma, and the severity of their asthma was worse with lower levels of this fat soluble vitamin.
It's best to get your Vitamin A in foods as they also contain the antioxidant carotenes that are also found lacking in asthmatics. It is found in animal sources such as liver and egg yolks. In vegetables, look for foods that are brightly colored orange or yellow such as carrots, mangoes and sweet potatoes.
Antioxidants
Oxidation is a chemical process that occurs in the body constantly. While necessary, it is damaging and is probably the cause of aging and degenerative diseases.
Oxidation occurs rapidly in the airways of asthmatics in the presence of an allergy trigger, causing a resulting immune response and inflammation.
Antioxidants are the body's answer to combat oxidants and slow this process. Asthma and nutrition are linked once again. The best source of antioxidants is in fresh fruits and vegetables as well as supplements. Which is why asthma nutrition is so important.
Vitamin C
Vitamin C is one of the most well-known antioxidants and its easy to get in fresh foods and supplement form.
Vitamin C has been studied fairly extensively in asthma nutrition with conflicting results. Studies do show low levels of Vitamin C in those with asthma, however supplementing does not seem to improve symptoms. However, increased Vitamin C intake did improve lung FUNCTION even if it did not improve symptoms.
Other Antioxidants
There are many different antioxidants in many different classes. Different antioxidants are found in different foods in many combinations. Most are found in fruits and vegetables, but coffee, tea and chocolate have significant amounts as well.
While no one antioxidant has come out as a clear winner in reducing asthma symptoms, researchers recognize a definite link between asthma and antioxidants.
Recent studies show that antioxidant levels in airways are used up rapidly in response to allergy triggers, so the airway levels are what is important.
It makes sense that eating a wide variety of foods high in antioxidants and/or regular supplementation would encourage airway levels to stay higher.
There is also some evidence that asthmatics have higher requirements for antioxidants than those without chronic illness. So supplementation may be especially important.
If you choose to supplement, Multivitamins From Whole Food Sources should be chosen in order to gain the full spectrum of antioxidants that the food source holds.
For example, Vitamin C that is from powdered acerola cherry will also contain other antioxidants in the form of flavenoids and polyphenols as well as small amounts of vitamins and trace minerals that may help the body to absorb the primary nutrient and that may be just as important as the Vitamin itself.
While there is no minimum dose of most antioxidants that are required for good health, they are obviously an important part of asthma nutrition. There are many high quality supplements to choose from.
Vitamin C is the exception to this. The Linus Pauling Institute "recommends a vitamin C intake of at least 400 mg daily — the amount that has been found to fully saturate plasma and circulating cells with vitamin C in young, healthy nonsmokers".
However, they go on to state, "...individuals suffering from certain diseases may require substantially larger amounts of vitamin C to... derive therapeutic benefits."
They give a "Tolerable Upper Intake Level" of 2000 mg per day for adults.
Other nutrients influencing asthma and nutrition
Magnesium
Magnesium is the 11th most abundant element in the body and it's critical in over 300 different enzymatic reactions in the body. Magnesium is so important that it has become the FIRST treatment in several life threatening emergency medical conditions. Studies have been done showing that diabetes, migraine headaches, high blood pressure, stroke, gallstones, constipation cardiovascular disease - and asthma could all simply be
Signs of Magnesium Deficiency
and can all improve greatly with some extra magnesium supplementation!!
Since is found mainly in green leafy vegetables, legumes, whole grains and fish, and these are eaten rarely in a standard western diet, it makes sense that most first world nations are magnesium deficient. Magnesium deficiency is found in up to 60% of people with chronic illness and one study of magnesium supplementation in children showed significant improvements in asthma symptoms.
Supplements can be easily and inexpensively found in health food stores. It water soluble so it is generally safe to take as directed unless you have kidney problems.
There HAVE been cases of Magnesium Overdose, however, but for the vast majority of people, the risk is one of being deficient and not of taking too much.
B vitamins, Selenium and Zinc
These nutrients have also been shown to be lowered in people with asthma. Although no studies have shown that supplementation improves asthma, it makes sense to get adequate amounts of these essential nutrients as they play important roles in immune system functioning.
Asthma and nutrition deficiencies seem to be a major problem.
Foods
CoffeeCoffee has been shown to reduce the symptoms of asthma by a significant amount due to certain components called methylxanthines that act as bronchodilators.
While this may be true, coffee is not necessarily the best way to control symptoms. There are a lot of other good health reasons NOT to drink coffee. If you don't drink coffee, asthma symptom control is not a good reason to start. But if you already drink coffee and are unwilling to stop, cutting down and/or drinking organic coffee that does not have pesticides or other toxic chemicals in it is probably a good idea.
Apple Juice
One study showed a strong link between children who drank apple juice every day and reduction of asthma symptoms.
This is probably due to the antioxidants in apple juice and the daily drinking of it acting to keep the antioxidant levels high in the body. This is a super easy and cheap way to keep symptoms at bay and a great addition to any asthma and nutrition program.
The Mediterranean Diet
The Mediterranean Diet has been shown to generally be a terrific way to improve general health, extend your life and to prevent asthma symptoms.
Studies on populations that adhere to this type of diet show very low amounts of asthma and other allergic conditions. Essentially, the Mediterranean Diet has low amounts of saturated fats and sugar with high amounts of whole grains, fruit and vegetables. It makes an excellent model diet for asthma and nutrition.
MilkMilk allergy is a well known phenomenon in western medicine. But less well accepted is that cow's milk is a contributing factor in asthma.
In western medicine, delayed reactions to foods are generally not recognized even though delayed hypersensitivities to other allergens, such as poison oak, is well accepted.
There are thousands of people who claim to have received relief from asthma once cow's milk was eliminated from the diet, but there are few studies linking cow's milk and asthma. One study, however, recognized significant reactions to cow's milk up to 26 days after reintroducing milk after a year long abstinence and some of these reactions were asthma symptoms.
It's also well recognized that a high number of children with cow's milk allergy go on to develop asthma. While a doctor will probably not diagnose your asthma as being related to a cow's milk allergy, if you have asthma and have tried to get relief without results, an elimination diet is easy.
Simply do not eat or drink any products with cow's milk for a period of time. Usually several months and see if your symptoms improve. If they do, then see what happens when you start eating the foods again - or maybe you'll just want to eliminate cow's milk forever. Incidentally, it is usually only PASTEURIZED cow's milk that is the problem, raw milk products are often tolerated well by those who have cow's milk allergy or delayed reactions to cow's milk.
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