As technology helps improve the standard of living and medical care, people will live longer, causing life expectancy to rise. This will be more significant in developing countries, which have higher birth rates. These factors increase the risk of overpopulation. As overpopulation increases, resources such as food, water, and energy will be more scarce. Eventually, there may be a time when food production will not be able to keep up with population. This might lead to famine, higher poverty rates, and even war. More countries may be forced to take steps to control their population growth.