The lymphatic system itself can have severe issues. Consider this spiral one of my family got: back hurt, get a chiropractic, no exercise, bed-ridden for weeks,

The lymphatic system itself can have severe issues. Consider this spiral one of my family got: back hurt, get a chiropractic, no exercise, bed-ridden for weeks, eventually recovered, but obtained lymphatic swelling of feet. EDIT: Fact-checked the story above, back pain wasn't the cause. Bad hydration was. After drinking more the symptoms passed (swollen feet).