Significant unintentional weight loss is a common yet challenging clinical presentation that often necessitates a systematic, multidisciplinary evaluation to identify the underlying cause. Although the initial diagnostic approach appropriately focuses on excluding organic etiologies such as malignancy, endocrine disorders, chronic infections, and gastrointestinal diseases, psychiatric disorders should be strongly considered when extensive investigations fail to reveal a medical explanation. Early recognition of psychiatric causes can prevent unnecessary investigations, reduce healthcare costs, and facilitate timely treatment.
Depression is India’s most prevalent mental health condition. Major depressive disorder (MDD) is a common psychiatric illness that can present with significant changes in appetite and body weight. It is marked by persistent sadness, a reduced ability to enjoy activities that were previously pleasurable, fatigue, impaired concentration, feelings of worthlessness or excessive guilt, psychomotor retardation or agitation, sleep disturbances, and recurrent thoughts of death or suicidal ideation. The WHO estimates 56 million Indians—approximately 4.5% of the population—have depressive disorder. Alterations in appetite and body weight are among the core diagnostic features of depression. While the melancholic subtype is commonly associated with reduced appetite and weight loss, atypical depression may present with increased appetite and weight gain.
In the Indian population, depression frequently presents with predominantly somatic rather than psychological symptoms, a phenomenon often referred to as masked depression. Patients may present with physical complaints such as unexplained weight loss, loss of appetite, fatigue, body aches, gastrointestinal symptoms, or sleep disturbances, while emotional symptoms may be underreported or overlooked. Consequently, patients often undergo repeated medical evaluations before an underlying depressive disorder is recognized.
Mental health conditions represent one of India’s most significant but least-addressed public health challenges. More than 200 million Indians — roughly 1 in every 7 people — live with a diagnosable mental health condition, yet over 83% receive no treatment at all. The present case highlights the importance of considering major depressive disorder in the differential diagnosis of persistent unexplained weight loss following an appropriate medical workup. It emphasizes the need for a biopsychosocial approach in evaluating patients with significant weight loss when no organic pathology is identified.
Importantly, weight loss secondary to depression is potentially reversible with timely diagnosis and appropriate treatment, leading to significant improvement in physical health, restoration of body weight, and overall quality of life.
Dr. Yamini Kannappan
Consultant Psychiatrist
Kauvery Hospital, Chennai
Happy Doctors’ Day!
Behind Every Recovery Is a Doctor Who Cared.
At the outset, I just want to say that if there is one person I’m truly grateful for in my life, it is you.
Seeing Appa get back to his best self after his recent setback has just reminded me how lucky our family is to have you in our corner. I wanted to put all my feelings into a proper testimonial that you can use however you’d like. I want you to know just how much your care means to Amma, Appa, Margo, and me.
“My Appa(father) went through a lengthy fight with depression starting all the way back in 2018. Living in North America for work, it was incredibly difficult to be far away and watch my hero struggle the way he did. For years, getting him consistent help was tough due to the taboo around mental health in our society, but everything changed in 2023 when my parents moved to Chennai. Thanks to my friend, Dr. Nuzrath Jahan for pointing us in the right direction, Appa started consulting Dr. Yamini Kannapan and Dr. Kavitha Sundaravadanam at Kauvery Hospital. Their partnership did a wonderful job saving Appa.
My parents are deeply emotional people, and every minor gesture impacts how comfortable they feel. Dr. Yamini’s approach makes all the difference in the world. Even in the middle of a busy day, she always addresses them with a smile and a big heart, which significantly improves their confidence every single visit. She even takes the time to ask about my wife and me, which means the world to my parents and makes them feel like they are talking to a close family member rather than just a doctor.
Recently, after many months of being off most of his medicines, Appa started showing minor symptoms of disinterest and being down again. Amma immediately took him back to Dr. Yamini. She quickly diagnosed it, adjusted his medicines, and he is already showing great progress again. We are very confident that he’ll be back to being good under Dr. Yamini’s treatment.
If there is one person I’m grateful for in my life, it is Dr. Yamini. We need more doctors like her in the mental wellness world. I highly recommend her to anyone whose family is fighting a similar battle.”
Thank you again for everything you did for us. I look forward to thanking you in person when we visit India in the near future. Please do let us know if you ever need anything in Canada.
Best Regards
