unhealthful
un-health-ful
adjective
Not good for one's health or well-being; detrimental to physical condition.
"Smoking is an unhealthful habit."
Thesaurus
Synonyms: crippling, disabling, unmedicative, nonmedicinal, unmedical, unhealthy, incapacitating, cytopathogenic, pathogenic, infective, unmedicinal, morbific