In 1980, the richest countries had a gross national income 60 times higher than in the poorest countries. Currently, the difference has multiplied by 122. The wealth for itself nor determines health. There are low-income countries, such as Cuba or Costa Rica, which have achieved good levels of health. In countries with economies in transition, it is concerned about the exorbitant rise in obesity. To correct this tendency should be taken into account to other sectors such as trade, agriculture, employment and education. Inequalities in more prosperous areas also have an impact on health.
Having little revenue means less access to education and leisure, suffer unemployment, job insecurity, worse working conditions and live in less safe neighborhoods. Poverty, workplace hazards and the presence of certain industries make in the Spanish Southwest, figures from health worse than in the rest of Spain. The differences can also be found locally, between neighborhoods of the same city. The employment situation is one of the best studied social factors. It is known that workers with lower income and increased insecurity labour have poorer health. The least qualified suffer with higher incidence pathologies such as cervical, lumbar pains and migraines.
One of every four workers with low preparation has a temporary contract, and about 8% does not even contract. It is not strange that a 12% suffer psychological problems, because the uncertainty and lack of control produced levels of stress that jeopardize mental health. Also found that the most disadvantaged women suffer higher rates of overweight, because the lack of resources and time is usually translated in a diet worse. Less than 20% of women with low income also makes physical exercise during the free time, compared to 40% among the wealthy classes. A new approach to health care is necessary. Few problems are only genetic or biological, it must incorporate social processes to human biology. Thinking about health is also search the causes why sick people.