Last Updated on Thursday, 03 September 2009 17:41

ADHD Causes

The real cause of ADHD is not known. However, it is believed to be caused by a chemical imbalance in the brain. No single cause has been identified, but ongoing researches are targeting several genetic and environmental links.

Genetics

Genetic influences are considered to be the main cause of ADHD. Research shows that 25% of close relatives of ADHD children also suffer from ADHD, compared to just about 5% in the general population. Twins also show a strong genetic influence towards this disorder.

Environmental Agents Toxins

Exposure to toxic levels of lead is associated with a higher risk of ADHD. Lead is present in several products such as antique toys, antique paintwork, lead paints, leaded petrol, pipes, pottery glazes, scrap metal and solder. It is illegal in the UK to use lead solder or pipes in systems used for drinking water.

Alcohol and smoking

The use of cigarettes and alcohol during pregnancy increases the risk of ADHD in the newborn.

Food Additives and Sugar

Today, research has put forward evidence that ADHD may arise from some common food colourings, dyes and preservatives. British researchers at the University of Southampton reported in September 2007 that artificial colours in the diet might result in increased hyperactivity in children. On July 8, 2008, the European Parliament voted in favour of labelling foods containing implicated food colourings. The FSA now recommends the elimination of foods containing dyes from the diets of children who may have ADHD.

Brain Injury

Children who have suffered accidents/trauma leading to brain injury may show some signs of behaviour similar to that of ADHD; however this is a rare occurrence.

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