Affect
“To act upon: a : to produce an effect (as of disease) upon; to have a detrimental influence on.”
Source: Webster’s New Third International Dictionary
“To act upon; influence; change; enlarge or abridge; often used in the sense of acting injuriously upon persons and things. To lay hold of or attack (as a disease does); to act, or produce an effect or result upon; to impress or influence (the mind or feelings); to touch.”
Source: Black’s Law Dictionary, 6th Edition