Saed News: We all know someone who seems to never get sick, while others catch every cold wave or quickly fall ill under stress. Scientists say this difference is not just “luck.” Part of it is related to genetics. Some people naturally have a stronger immune system or a different inflammatory response. However, genes are only part of the story.
According to SAEDNEWS, sleep is one of the most important factors in the body’s defense system. During sleep, the immune system produces protective cells and proteins. Chronic lack of sleep can make the body more vulnerable to viruses.
Chronic stress also plays a major role. High levels of cortisol over time can weaken immune system function.
In recent years, scientists have paid special attention to the “gut microbiome”—billions of beneficial bacteria living in the intestines. These microbes affect inflammation, immunity, and even mood.
Diet, exercise, and exposure to nature are also important. People who exercise regularly, eat a varied diet, and do not smoke usually show greater resistance to diseases.
Doctors emphasize that the immune system is not just a part of the body; it is a reflection of our overall lifestyle.
