Читать книгу Asthma-Free Naturally: Everything you need to know about taking control of your asthma онлайн | страница 8

There is no universally accepted definition of asthma. The Concise Oxford Dictionary describes it as ‘a disease of respiration characterised by difficult breathing, cough etc.’. Any good medical book will describe it in more technical terms but ‘difficult breathing’ is the part with which any asthma sufferer is familiar, even if it varies from mildly uncomfortable to life-threatening. Asthma is news now. There was a dramatic increase in the condition in the late twentieth century to the extent that an estimated 100 to 150 million people in the world are now affected by it, but it is not a recent phenomenon.¹

The term ‘asthma’ is a Greek translation of gasping or panting, and the problem was treated as far back as 2000 BC by Chinese doctors with the herb Ma Huang. The first known recording of the symptoms was about 3,500 years ago in an ancient Egyptian manuscript called Ebers Papyrus. Throughout the ages, asthma has received varying degrees of attention; the symptoms and their accompanying anxiety have been described by many prominent historical figures, including the famous Greek physician, Hippocrates.

Over the centuries, there has been an assortment of different theories about the causes of asthma, and so an eclectic range of remedies has been advised, including horse riding, strong coffee, tobacco, faith healing, chloroform and even drinking the blood of owls in wine, as practised by the ancient Romans. Van Helmont who lived in the early part of the seventeenth century claimed that asthma was epilepsy of the lungs due to the sudden and unpredictable nature of an attack. Based on his own experience of asthma, English physician Thomas Willis said that ‘the blood boils’, and that ‘there is scarce anything more sharp or terrible than the fits thereof ’.

It was not until the eighteenth century that Lavoisier provided the first real account of the functioning of the lungs, thereby providing the basis of modern-day understanding of the respiratory system. Prior to this, it was commonly believed that air was drawn into the lungs to cool the body. Lavoisier’s contribution was that air is drawn in to be converted to energy by the metabolism, and that carbon dioxide and heat are produced as end products of the process. Lavoisier’s work recognised that oxygen is essential to sustaining life.