There is strong evidence that income maldistribution significantly aggravates inequalities in health.
In 1991 in the UK a study of 10,000 civil servants confirmed that social class strongly affects health. The higher civil service grades were found to be much healthier than their clerical colleagues. Families on low incomes have also been shown to be eating unhealthy diets.
According to a 1999 report, poor residents in Lima, Peru, paid private vendors as much as $3 per cubic meter for buckets of often-contaminated water while the more affluent paid 30 cents per cubic meter for treated municipal tap water.