It is said that 6000 years ago, there were only 20 million people on earth; After 5000 years, it has become 400 million people; In the last 500 years, the population growth has suddenly become faster, and now it has exceeded 7 billion.
In the 1950s, many people only lived 50 years on average. By the beginning of the 21st century, most of us were over 70 years old. There are many reasons for the increase of population and the extension of life span, and medical research has made great contributions.
Click to edit this illustration about medical research.
Medicine has brought so many benefits to mankind. No wonder it was said that "life is rare in the past seventy years", but now it is "not uncommon" at the age of eight to ninety.
MEDICAL RESEAECH CONFERENCE
15 OCT 2020