what is the function of lymph - #7202

I recently heard about the lymphatic system and how it plays a role in immunity, but I don’t fully understand it. What is the function of lymph, and why is it so important for our health? I always thought blood was responsible for carrying nutrients and removing waste, so what does lymph do that’s different? From what I read, the function of lymph is to help fight infections and remove toxins from the body. But how exactly does it do that? Does it work like blood circulation, or does it move differently? I also saw that the lymphatic system doesn’t have a pump like the heart—so how does lymph actually flow through the body? I also want to know if problems with the lymphatic system can cause serious health issues. If someone has swollen lymph nodes, does that mean their immune system is overactive, or could it be a sign of infection or even cancer? When should someone worry about swollen lymph nodes? Another thing I’m wondering is how to keep the lymphatic system healthy. Are there specific foods, exercises, or habits that help lymph flow better? I read that massages and staying hydrated can help, but do they actually make a difference? For those who have had issues with lymphatic health, what symptoms did you experience? Did treatments like lymphatic drainage or lifestyle changes help improve your condition? I just want to understand more about the function of lymph and how to keep it working properly.