1 (wiktionary) 2 (es.wikipedia) 3 (en.wikipedia) 4 (glosbe)

Verbs Nouns Adjectives/Adverbs Pronouns Prepositions Conjunctions
schädlich (Advanced search)

destructive {adj} (causing destruction; damaging) detrimental {adj} (causing damage or harm) harmful {adj} (likely to be damaging) harmless {adj} (incapable of causing harm or danger) inimical {adj} (harmful) noisome {adj} (hurtful or noxious to health) pernicious {adj} (causing much harm) unhealthful {adj} (not healthy) unhealthy {adj} (conducive to poor health)

It is a fact that smoking is bad for health .	Es un hecho que fumar es malo para la salud.
Smoking is harmful to the health .	Fumar es perjudicial para la salud.
It goes without saying that smoking is bad for the health .	No hace falta decir que fumar es malo para la salud.
Eating too much is bad for the health .	Comer demasiado es malo para la salud.
Smoking is harmful to your health .	Fumar es perjudicial para su salud.
Eating too much is bad for the health .	Comer demasiado es malo para la salud.
Smoking is bad for the health .	Fumar es malo para la salud.