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A study by the Institute of Health Assessment and Evaluation (IHME) at the University of Seattle, Washington, was published in The Lancet and compares public health worldwide between 1950 and 2017.
Nearly half of the world's countries, mainly in Europe, North America and South America, have not had enough children to maintain their populations. At the same time, births continue to increase in Africa and Asia, where the average woman in Niger gives birth to seven children throughout her lifetime.
Main factors of education
Professor Ali Mokdad of IHME says education is the most important factor for population growth.
He says that if a woman trains her, she will spend more time at school and delay pregnancy, so there will be fewer children.
According to IHME, Cyprus is the most fertile country in the world. The average woman in Cyprus is giving birth to a lifetime child. On the other hand, the average number of women in Mali, Chad and Afghanistan is more than six.
According to Mokdad, the people of developing countries continue to increase, but the economy generally increases and usually declines over time.
The country is expected to be an economically better country, and the fertility rate is more likely to decline and level.
Improved lifetime
We also live longer than before. The life expectancy of men increased from 71 to 48 years old in 1950. The woman is expected to live in the age of 76 in 1950 compared with 53 now.
Heart disease is now the most common cause of death worldwide. At the end of 1990, there was a neonatal problem followed by lung disease and diarrhea.
Ali Mokdad finds that as the country becomes richer, the deaths from infectious diseases are reduced.
He noted that deaths from infectious diseases such as malaria and tuberculosis have declined significantly since 1990, but no new epidemic has occurred.
There are certain behaviors that lead to more cases of cardiovascular disease and cancer. Obesity is number one, increasing every year and our actions contribute to it.
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