The passage discusses how a nation's health impacts its wealth and development. It states that while natural resources are important for a nation's wealth, health also plays a key role. A country requires a skilled and healthy workforce to power its economic and social development. For industries like manufacturing, finance, and services, workers' health is essential. However, many countries fail to adequately invest in their healthcare systems. As a result, these nations end up with workforces that are unable to function efficiently, negatively impacting economic and social development.