Disability adjusted life years
DALYs or disability adjusted life years is a metric used to quantify the overall disease burden which is the number of years that are lost as a result of ill-health, disability, or premature death. One DALY is equivalent to the loss of one year of health. In 2017, the highest share of total DALYs among adults in India were related to depressive disorders.
Interestingly, mental disorders with onset during adulthood reflected higher DALY rates in high and middle SDI states compared to the low SDI states. For instance, the state of Tamil Nadu which is categorized as a high SDI state reflected the highest DALY rate relative to depressive disorders.
Some studies were able to quantify to an extent, a small fraction of risk factors, that are attributed to certain mental disorders. For example, lead exposure as a risk factor accounted for almost 63 percent of all idiopathic developmental disorders among adults in India in 2017.