Read somewhere that a BMI of under 18.5 can lead to getting ill more often due to the immune system being less strong but how does weight contribute to your body being able to fight illnesses?
In: Biology
This is a true statement in most cases. It primarily comes from the assumption that a low BMI (below 18.5 is classified as anorexic) indicates a poor nutrient statues of the individual. Because one typically is consuming less calories than their bodies daily minimum requirement they lose weight and reach this BMI. Anytime you calorie consumption is below your daily minimum needs or Basal Metabolic Rate the body begins to break down fat stores and other sources to supply vital organs with the nutrients they need. The immune system requires nutrients and as a result of a lack in nutrient supply it begins to weaken. You may produce less immune cells. These immune cells may be less functional because they can’t produce the compounds they need to perform optimally. Poor nutrients could weaken barriers that may keep infection out.
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