noun
BAD : Nowadays we hear a lot about pollution and its results on our health.
GOOD : Nowadays we hear a lot about pollution and its effects on our health.
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result = the situation or action that develops from a previous situation or action: 'The result of the crisis was that in 1649 the king was beheaded.' 'The anti-smoking campaign has produced excellent results.'
effect ( on sb/sth ) = a change in condition that is caused by something: 'The drug had no effect on him.' (= there was no change in his condition) 'Wine always has an effect on me - it makes me want to sing.'