India, Feb. 18 -- For better sleep, many people are in the habit of listening to coloured noise, such as white or pink noise. These sounds are generally perceived as calming and are usually used as non-pharmacological sleep interventions.

But is there a limit to their usage, and could overdependence on them affect the body's natural sleep mechanism?ALSO READ: Sleeping late every day? Cardiologist warns what chronic sleep loss does to your body: From weight gain to diabetes risk

To understand the various roles of sound therapy, HT Lifestyle spoke with Dr Nana Kunjir, consultant pulmonologist and intensivist at Sahyadri Super Speciality Hospital, Pune.Let's take a closer look at each one of them to understand whether they have any limitat...