clogging the arteries: blocking the tubes carrying blood from the heart

experts: persons with high skills, specialized knowledge

specialists: persons who do particular, specific research

moderate: reasonable, not extreme

to maintain: to keep

habits: repeated, usual acts we don't think about, like smoking cigarettes

reservoir: pond or lake that stores drinking water

to vaporize: to turn into a gas or mist

to prevent: to keep from happening

to dump: to throw out