Some people fall sick more often because their immune system is weak. Poor diet, stress, lack of sleep or existing health conditions make them more likely to catch infections, even in the same surroundings.
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
Even in the same environment, people with weak immunity get sick more often. Immunity depends on various factors like nutrition, sleep, hygiene, stress levels, age and medical conditions. Those who eat poorly, don’t rest enough or are under stress have less resistance to infections. In contrast, people with strong immune systems, healthy habits and good hygiene can fight germs better. So, immunity plays a big role in how often we fall ill.
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