People with low immunity are always at a higher risk or more vulnerable during travel. (policybazaar.com)
It is capable of lowering immunity since the immune system is so engaged with handling those toxins from improperly digested foods. (healthimpactnews.com)
These findings are similar to those of previous studies, done on athletes, that suggest that exhaustive, high - intensity exercise may actually lower immunity and increase the risk of viral infections. (health.com)