The term substance, when discussed in the context of substance abuse and dependence, refers to medications, drugs of abuse, and toxins. These substances have an intoxicating effect, desired by the user, which can have either stimulating (speeding up) or depressive/sedating (slowing down) effects on the body.
Definition of heal. 1  transitive verb. 2  1a : to make free from injury or disease : to make sound or whole heal a woundb : to make well again : to restore to health heal the sick.
[with object] 1Cause (a wound, injury, or person) to become sound or healthy again. âhis concern is to heal sick peopleâ. âAlthough he does not prescribe medicines, he plays a significant and positive role in healing sick people.â. âIt will probably take a while for him to recover his strength and heal his wounds.â. âThe disciples aren't able to heal a lad who is suffering from what sounds like epileptic seizures.â. âThere was no harm in trying to heal a sick man who wanted to get better.â.