Impact of Lavender Essential Oil Blends on Depression, Anxiety, and Stress among Irular Tribe in Tamil Nadu: Randomized Controlled Trial

worry, agitation, or restlessness-are frequently overlooked, intensifying their emotional and physiological toll. 6 IntroductIonMental health concerns, particularly depression and anxiety, are increasingly prevalent among older adults, with a heightened impact on tribal populations. 1 Aging individuals, including those from indigenous communities, frequently contend with chronic health conditions such as diabetes and cardiovascular diseases, alongside physical impairments and cognitive decline.The resultant loss of independence significantly affects their overall well-being. 1,2 The population of interest in this trial comprised elderly individuals (65-74 years) of the Irular tribe in Tamil Nadu, a socioeconomically marginalized group with limited access to conventional healthcare.In tribal settings, these challenges are compounded by structural barriers, including limited healthcare access, inadequate infrastructure, and deeply rooted cultural stigmas surrounding mental health. 3 The outmigration of younger generations further exacerbates social isolation among elders, weakening traditional support systems that have historically been a source of stability.As these communal bonds erode, older adults face an increased risk of loneliness, grief, and financial insecurity. 4,5 Depression among tribal elders often goes undiagnosed due to a lack of awareness and the cultural normalization of silent endurance.Similarly, anxiety disorders-manifesting as persistent