Excerpts from a report by German paediatrician, Dr Ursula Klemm:
Dr Klemm thought it unlikely that Hafer's recommendations would help children with ADD/ADHD. However, she was persuaded to trial the diet in her clinic and was astounded by the results.

An extract from a research report by Dr Roy-Feiler:
Two psychiatrists did some tests in order to discover if children were affected by the high intake of phosphate. In a double-blind test one group of children were given phosphate-rich food, the second group was given foods low in phosphate. The results were impressive - those children who had consumed high levels of phosphate in their diet had displayed violent and threatening behaviour.

Extracts from a news article in The Age(Melbourne, Australia):
The article reveals that researchers now suspect that there is a link between the high consumption of soft drinks and the high incidence of osteoporosis and tooth decay in young people. Phosphoric acid is used in many soft drinks, and particularly in cola drinks. Hertha Hafer had already recognised this link in her early research studies.

Dr. Lendon H. Smith, MD, a US paediatrician, has always maintained that certain foods play a major role in causing problem behaviour and other ailments. For example, Smith suggests that allergies, alcoholism, insomnia, hyperactivity in children and a host of other problems are the result of enzyme disturbances. As Dr Smith writes, "With suitable blood and hair tests I found that all hyper kids were low in calcium and magnesium, despite excessive consumption of dairy products. They were not absorbing the nutrients they needed to correct their 'neurological' problem."

Like Hafer, Smith argues that all these conditions can be managed by making changes to the diet. We highly recommended that you read this long but very interesting article ADHD and ADD. The Hyperactive Child.

The article Cut out Dairy for Autistic Children - published in THE AUSTRALIAN November 14, 2002 - quotes Paul Shattock from the University of Sunderland's autism research unit in Britain. Shattock suggests that dairy consumption is linked to autism and other mental disorders.

A brief report titled Born to be Wild appeared in THE WEST AUSTRALIAN newspaper. The article quotes research conducted at the University of Chicago. The research reveals an anomaly in the saliva of children with a history of juvenile delinquency.

South Australian farmer Percy Weston's book Cancer: Cause & Cure is remarkable for its findings which are strongly supportive of Hafer's theories. Weston spent a lifetime researching the health risks of super-phosphorus on humans and livestock. He devised a low-phosphate diet, very similar to Hafer's.