Histamine is a protein that plays a role in many allergic reactions. An allergy is an immune response to an innocuous material such as pollen or dust that acts with lymphocytes specific to that material.
Histamine is vasoactive, which means in can cause inflammation directly or indirectly. Histamine stimulates secretion of gastric juices and causes enlargement of capillaries, shrinking of bronchial smooth muscle, and reduced blood pressure.
Many of the organs and body cavities throughout the body are lined with a moist tissue known as mucosa. These include the digestive tract, nose, mouth and lungs. Mucus, a thick fluid is released by glands along the mucosa.
IgE-coated mast cells, found in nasal mucosa, proliferate with other mediators such as histamine. An allergen can bind with the IgE-coated mast cells when it enters the nasal mucosa releasing histamine, amongst other immune mediators. This sudden propagation of mediators creates symptoms associated with allergies, like a sudden increase in secretions. The resulting vasodilatation generates congestion and pressure and nerve ends are stimulated to create an itchy sensation.
Natural medicine encourages boosting of the immune system by augmenting diet with abundant fruit and vegetables, for their vitamin and mineral content, and especially their antioxidant properties. Vitamin C, for example, is said to reduce histamine by up to 38 percent, and might help create adrenal hormones that hinder allergic reaction.
Several of these properties, in a natural state are found in such plants as Liquorice root; Pine Bark extract; Butterbar extract; Sculletaria. Indian gooseberry or amla (Phyllanthus emblica); Harda or Haritaki (Terminalia chebulat); Bedda Nut Tree (Terminalia bellerica); Indian walnut (Albizia lebbeck); ginger root (Zingiber officinale); Indian long pepper (Piper longum); and black pepper (Piper nigrum).
In fact, there is an abundance of long established herbal remedies in use against allergies and related symptoms. Such natural formulations are commercially available in tonic or tablet form.
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