Bromelain is an extract from pineapples. One of the theories about how it works is that it is believed to have anti-inflammatory properties. In one study researchers at the University of Connecticut found that bromelain reduced airway inflammation in animals with allergic airway disease. Bromelain should not be used by people with allergies to pineapples. Side effects may include digestive upset and allergic reactions.
The herb boswellia, known in Indian Ayurvedic medicine as Salai guggal, has been found in preliminary studies to inhibit the formation of compounds called leukotrienes. Leukotrienes released in the lungs cause narrowing of airways.
A double-blind, placebo-controlled study of forty patients, 40 people with asthma were treated with a boswellia extract three times a day for six weeks. At the end of this time, 70 percent of people had improved. Symptoms of difficulty breathing, number of attacks, and laboratory measures had improved.
Boswellia is available in pill form. It should say on the label that it is standardized to contain 60 percent boswellic acids. It should not be taken for more than eight to 12 weeks unless otherwise recommended by a qualified health practitioner.
It is not clear what dose is safe or effective or how boswellia may interact with other asthma treatments. Side effects may include digestive upset, nausea, acid reflux or diarrhea.
7) Weight Loss
Numerous studies have found that obesity is a risk factor for asthma.
Biofeedback is sometimes recommended by practitioners as a natural therapy for asthma. For more information about biofeedback, read the Biofeedback Fact Sheet.More:
Bolte G, Kompauer I, Fobker M, Cullen P, Keil U, Mutius E, Weiland SK.Fatty acids in serum cholesteryl esters in relation to asthma and lung function in children. Clin Exp Allergy. 2006 Mar;36(3):293-302.
Bruton A, Lewith GT. The Buteyko breathing technique for asthma: a review. Complement Ther Med. 2005 Mar;13(1):41-6.
Cooper S, Oborne J, Newton S, Harrison V, Thompson Coon J, Lewis S, Tattersfield A. Effect of two breathing exercises (Buteyko and pranayama) in asthma: a randomised controlled trial. Thorax. 2003 Aug;58(8):674-9.
Danesch UC. Petasites hybridus (Butterbur root) extract in the treatment of asthma--an open trial. Altern Med Rev. 2004 Mar;9(1):54-62.
Gupta I, Gupta V, Parihar A, Gupta S, Ludtke R, Safayhi H, Ammon HP. Effects of Boswellia serrata gum resin in patients with bronchial asthma: results of a double-blind, placebo-controlled, 6-week clinical study. Eur J Med Res. 1998 Nov 17;3(11):511-4.
Garcia V, Arts IC, Sterne JA, Thompson RL, Shaheen SO. Dietary intake of flavonoids and asthma in adults. Eur Respir J. 2005 Sep;26(3):449-52.
Jackson CM, Lee DK, Lipworth BJ. The effects of butterbur on the histamine and allergen cutaneous response. Ann Allergy Asthma Immunol. 2004 Feb;92(2):250-4.
Lee DK, Haggart K, Robb FM, Lipworth BJ. Butterbur, a herbal remedy, confers complementary anti-inflammatory activity in asthmatic patients receiving inhaled corticosteroids. Clin Exp Allergy. 2004 Jan;34(1):110-4.
Lehrer PM, Vaschillo E, Vaschillo B, Lu SE, Scardella A, Siddique M, Habib RH. Biofeedback treatment for asthma. Chest. 2004 Aug;126(2):352-61.
Mickleborough TD, Lindley MR, Ionescu AA, Fly AD. Protective effect of fish oil supplementation on exercise-induced bronchoconstriction in asthma. Chest. 2006 Jan;129(1):39-49.
Murray CS, Simpson B, Kerry G, Woodcock A, Custovic A. Dietary intake in sensitized children with recurrent wheeze and healthy controls: a nested case-control study. Allergy. 2006 Apr;61(4):438-42.
Nja F, Nystad W, Lodrup Carlsen KC, Hetlevik O, Carlsen KH. Effects of early intake of fruit or vegetables in relation to later asthma and allergic sensitization in school-age children. Acta Paediatr. 2005 Feb;94(2):147-54.
Patel BD, Welch AA, Bingham SA, Luben RN, Day NE, Khaw KT, Lomas DA, Wareham NJ. Dietary anti-oxidants and symptomatic asthma in adults. Thorax. 2006 Feb 7.
Romieu I, Varraso R, Avenel V, Leynaert B, Kauffmann F, Clavel-Chapelon F. Fruit and vegetable intakes and asthma in the E3N study. Thorax. 2006 Mar;61(3):209-15.
Secor ER Jr, Carson WF 4th, Cloutier MM, Guernsey LA, Schramm CM, Wu CA, Thrall RS. Bromelain exerts anti-inflammatory effects in an ovalbumin-induced murine model of allergic airway disease. Cell Immunol. 2005 Sep;237(1):68-75.
Shore SA, Johnston RA. Obesity and asthma. Pharmacol Ther. 2006 Apr;110(1):83-102.