Pollution linked to numerous diseases

LONDON - Pollution has been linked to about 200 different diseases, ranging from cerebral palsy to testicular atrophy, as well as more than 37 kinds of cancer, American research shows.

The study, which the authors say probably underestimates the full toll of the contamination, will focus attention on the need for information on the tens of thousands of chemicals routinely released into the environment.

But Britain has weakened the proposed European Union regulations to provide safety information on the substances, at the behest of the United States Government.

The research, by doctors at the University of California and at the Boston Medical Centre, was restricted to listing only effects that had been found by several different studies and which are often well known.

More than 120 diseases have been definitively linked to pollution, and in 33 others evidence of a link is judged to be "good". For the rest the evidence is "limited".

The study shows nine different pollutants have been "verified" to cause asthma - including four from car exhausts. Testicular atrophy is caused by oestrogen, increasingly found in British rivers that supply drinking water.

Mercury poisoning can cause cerebral palsy and more than 50 pollutants, ranging from dioxins to PCBs, have been shown to cause cancer.

Other effects include kidney disease, heart disease, hypertension, diabetes, dermatitis, bronchitis, hyperactivity, deafness, sperm damage and Alzheimer's and Parkinson's diseases.

One of the authors, Dr Ted Schletter of the Boston Medical Centre, said: "The human body is in constant conversation with this chemical milieu and some substances have turned out to be important contributors to disease."

He said pollution often acted in concert with genetic predispositions to developing particular illnesses.

Dr J. Peterson Myers, chief executive of the Virginia-based Environmental Health Sciences, said because science continued to find new effects of pollution, the number of diseases linked to it was "very much higher".

At the last count - more than 20 years ago - more than 100,000 chemicals were in use in Europe. Few have been properly tested.

Blood tests in Britain, the rest of Europe and the United States indicate that most people carry potentially hazardous chemicals in their bodies.

The European Commission has been trying to introduce a new directive requiring industry to provide safety information on the 30,000 most common chemicals, but this has been watered down because of pressure from the Bush Administration.

A leaked cable signed by the United States Secretary of State, Colin Powell, complains that the measures "would be significantly more burdensome to industry and Government" and would "impact" on US exports to Europe.

- INDEPENDENT