Bloated lymph nodes are one more warning signal. Lymph nodes often suffer when a person has issues with lungs. It means that the organism is trying to resist the external risks such as microbes and various bacteria. Due to the fact our lymph nodes serve as the filters, there are high chances they will be negatively impacted when the body fights the infections. These nodes have the same functions as the entire immune system. Thus, attacked lymph nodes result from the weakened immune system.