 [ Symptoms ] i am unable to lose weight after mono i got mono last fall as a college freshman female and gained 10lbs in a month my diet and exercise has not changed i eat healthy run and do circuits or intervals 5xwk i am now 15lbs heavier and very unhappy i take iron supplements to treat fatigue but has not helped with weight loss i was not diagnosed with hypothyroidism [ Disease ] a receptor is a structure located on the nerve cell that receives the chemical messenger neurotransmitter such as dopamine sent from an adjacent nerve cell this is how nerve cells communicate most of the drugs used to treat parkinson is disease are designed to interact with nerve cell receptors and improve nerve cell communication