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As cities grow denser, noise pollution from traffic, construction and nightlife is increasingly recognised as a —genuinesinceretruthfulhonest health hazard rather than a mere annoyance. Prolonged exposure to loud environments has been linked to raised blood pressure and disrupted sleep, both of which can —triggerprovokearousestimulate long-term cardiovascular problems. Some municipal governments have responded by —imposingposingproposingexposing stricter limits on construction noise and installing sound-absorbing barriers along busy roads to —shieldshelterscreencover residents living nearby.