Vaccination has eliminated many infectious diseases like smallpox and polio. But modern lifestyle choices, such as unhealthy diets, inactivity and stress, have led to an increase in non-communicable diseases like diabetes and heart problems.
Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure NCERT solutions
Class 8 Science Grade 8 Chapter 3 Health: The Ultimate Treasure question answer
Diseases like smallpox and polio have decreased due to successful vaccination programmes. However, lifestyle-related diseases such as diabetes and heart problems are now more common due to poor diet, physical inactivity, stress and pollution. These diseases are non-communicable and result from choices in our daily lives rather than germs. Hence, while medical science helped control some diseases, changing lifestyles have created new health challenges.
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