I think that the beginning of the question says "ill health"
Yes, this is true. low earnings are often correlated with bad health - it's because poor people have less access to health care, less access to healthy food and might be forced to do jobs which are stressful and demanding.
Answer:
The very warm ocean waters warm the air above them and evaporate very large amounts of water vapor. This water vapor is the fuel for a hurricane as it strengthens via the latent heat released by condensation of the vast amounts of water vapor.
