Public health approach of Unani medicine to cope and stay safe in hot environmental conditions.

The rising episodes of deadly heat waves have intensified the need for a heat protection strategy. The Unani system of medicine offers ways to stay healthy in different climatic conditions. Hence, this article aims to discuss the applicability of health protection measures suggested by Unani scholars for hot weather conditions in the light of current researches. The manual literature survey of classical Unani texts was conducted to collect information on health safety measures for hot weather. A substantial search of scientific databases such as "Google Scholar" and "Medline" for proposed measures in combination with "heat-stroke", "heat exhaustion" and "heat rash" was also conducted to identify their possible activity in heat-related illnesses. The guidelines for summer seasons in the classical Unani literature are described under the title tadābīr-i-mavsam. Unani scholars have discussed in detail the pathophysiological effects of heat and the measures to stay healthy by regulating the body system through lifestyle, diet and herbs. Most of the measures proposed by them are backed up by evidences. However, some measures have not yet been evaluated for their therapeutic or prophylactic efficacy in heat-related illnesses. On the basis of findings, the authors advocate the adoption of evidence-based measures and propose further investigation of those measures that are not well supported by the evidence or have not yet been evaluated.