‘Dust mite avoidance and diet modification’ could cut childhood asthma risk

The 24-year old ‘hygiene hypothesis’ has been put into serious doubt this week after new research has suggested this theory is purely a myth.

First proposed back in 1989, the idea behind the hygiene hypothesis is that if there is childhood exposure to allergens and certain infections, this can aid the immune system’s development and teach it to differentiate between harmful and harmless substances, and thus reducing a child’s risk of developing asthma and allergies.

However, Professor Hasan Arshad, a consultant in allergy at Southampton General Hospital, has conducted a 23-year study that may somewhat discredit this theory, finding that mothers can help to massively reduce the risk of their baby developing asthma in their first year of life by avoiding certain allergenic foods and doing their best to tackle and kill house dust mites – tiny creatures that inhabit bedding, carpets, clothing and soft furnishings. It is their waste droppings and not the mite itself that triggers an allergy. House dust mite allergy is common and has been found to be linked to asthma, eczema and allergic rhinitis.

Professor Arshad spoke on the study, commenting: “Although genetic links are arguably the most significant risk factor for asthma in children, environmental factors are the other critical component. Although this was a small study, we have found that the risk of developing asthma at some point during childhood is reduced by more than 50 per cent if we introduce control of a child’s environment.”

For the 23-year study, the researchers began to track 120 people born in 1990 and who had a family history of allergies – either both parents had asthma, or just one and a sibling.

It was discovered that 58 of the people in the study had either been breastfed or had drank low-allergy formula milk until they had reached the age of nine months. In addition, their mothers had not consumed any dairy products, eggs, soya, fish and shellfish and peanuts and tree nuts. For these same people, they had benefited from a vinyl bed cover at this young age and pesticides were also used to kill dust mites. Parents of the other 62 children were not so strict and did not adhere to the same principles.

Follow-up tests were carried out when the children had reached the ages of two, three, four, eight and 18. It was discovered that 11% of those in the prevention group had asthma by the time they had reached 18. However, more than a quarter (27%) of those exposed to possible allergens had developed asthma in the same time-frame.

Professor Arshad says: “By introducing a combined dietary and environmental avoidance strategy during the first year of life, we believe the onset of asthma can be prevented in the early years and throughout childhood up to the age of 18. Our finding of a significant reduction in asthma using the dual intervention of dust mite avoidance and diet modification is unique in terms of the comprehensive nature of the regime, the length of follow-up and the size of the effect observed.” He now says that a larger-scale study is required to see if a similar result pattern is achieved.

Asthma is becoming increasingly prevalent in Britain and around the world, with 5.4 million people receiving treatment for the condition in the UK alone and an estimated one in every 11 children. The ‘Asthma and Allergies’ section of the Medical Specialists Pharmacy website has a huge range of prescription and non-prescription medications that can help with problems such as asthma and hay fever – with the latter becoming more prominent in the coming months as March is the start of the pollen season, lasting up until November.

Junk food contributing to health problems in kids

There are countless health problems that junk food can pose to children. As well as being terrible for skin, causing spots and maybe losing popularity with friends, junk food can contribute towards tooth decay, is primarily responsible for the increasing childhood obesity epidemic that is sweeping across Britain – now being thought to increase the risk of liver disease in children and even leading to experts designing a childhood obesity risk calculator which can predict a new-born’s chance of becoming obese as they get older.

However, thanks to a study conducted by researchers based at New Zealand’s Auckland University, the list of health problems in kids that can be attributed to the consumption of junk food can now be increased.

More specifically, they are coincidentally the same issues that a survey published last week found could possibly be connected to the failure of Brits to wash their bed sheets at least once every week – asthma, eczema and rhinitis.

The study was a project examining the dietary habits of 181,000 youngsters aged six to seven within 31 different countries, in addition to 319,000 teenagers aged 13-14 from 51 countries.
Both the kids and their parents were given questions regarding the youngster’s diets and if the kids suffered from symptoms of asthma, or had itchy eyes, runny noses and eczema – a skin condition that causes itching and red/dry skin that can be appear cracked or broken.

From the results of the Auckland University study, health experts are now concerned that a diet comprising of high levels of saturated fat can be detrimental to children’s immune systems. This is because it was discovered that teenagers who ate food such as burgers three times a week or more were at a 39% higher risk of developing severe asthma, whilst younger kids were found to be 27% more at risk.  In fact, regardless of gender or financial status, junk food was the only type of food to show similar health problems across both age groups.

Those who ate junk food at least three times each week were also more susceptible to the eye condition rhinoconjunctivitis (rhinitis) – characterised by various symptoms including sneezing, red eyes,  runny nose and nasal congestion. However, the researchers also learned that by consuming about three portions of fruit and veg each week could reduce the risk by 14% in the younger group and 11% for the teenagers.

Writing in the British Medical Journal, the study authors state that their findings do not prove a definite cause and effect, but comment: “Fast food may be contributing to increasing asthma, rhinoconjunctivitis and eczema. Regular consumption of fruit and vegetables is likely to protect against these diseases.”

If you have suffering with Allergic rhinitis and/or asthma then Medical Specialists are at hand to help. We have a vast range of medications to help both asthma and allergy sufferers, all at fantastic prices. If you are suffering from asthma-like symptoms, you should see your doctor immediately for a diagnosis.

Your doctor is able to prescribe medication if he feels you have asthma. If you have already been prescribed an inhaler or have lost your inhaler or run out and cannot get a prescription immediately, we are able to supply you an inhaler to help your asthma symptoms. We have both blue (relievers) inhalers such as Ventolin and Salbutamol, and brown (preventers) inhalers such as Qvar Beclomethasone and Qvar Easi-Breathe.

If you suffer from hay fever or allergies we have many options for you including Alomide allergy eye drops, Loratadine tablets, Nasonex spray, Prevalin allergy nasal spray and Prevalin allergy kids nasal spray.