Behavioural and learning problems are on the increase. Dyslexia, dyspraxia, attention problems or hyperactivity affect at least one in five children.

These are not diseases but can be symptoms of an underlying problem. Conventional approaches often do not address the underlying causes and drugs can give rise to unpleasant side effects. Problems persist into adulthood in two out of three cases.

These and other symptoms such as obsessive-compulsive behaviour, Tourette's and Asperger's syndromes and even mild autism can also be associated with what is called Developmental Delay Syndrome.