Across medicine, key scientific advances in the past couple of decades have deepened knowledge of fundamental mechanisms of disease, leading to new treatments and the possibility of increased personalisation of care. Some of the most important developments in fields as diverse as immunology, the microbiome, genetics, stem cells and artificial intelligence are summarised in this article to raise awareness among psychiatrists and to help understand the opportunities and challenges they may present for mental healthcare in the future.

Food insecurity occurs when an individual lacks the financial resources to ensure reliable access to sufficient food to meet their dietary, nutritional and social needs. Adults living with mental ill health, particularly severe mental illness, are more likely to experience food insecurity than the general adult population. Despite this, most interventions and policy reforms in recent years have been aimed at children and families, with little regard for other vulnerable groups. Initiating a conversation about access to food can be tricky and assessing for food insecurity does not happen in mental health settings. This article provides an overview of food insecurity and how it relates to mental ill health. With reference to research evidence, the reader will gain an understanding of food insecurity, how it can be assessed and how food-insecure individuals with severe mental illness can be supported. Finally, we make policy recommendations to truly address this driver of health inequality.

Mental health clinicians are expected to offer support and advice to patients to promote smoking cessation. Alongside this is the relatively new and increasingly popular phenomenon of electronic cigarette use. The absence of any long-term evidence regarding safety is recognised and clinicians' awareness of e-cigarettes may be limited to personal experience or media publications, leading to uncertainty in their confidence discussing e-cigarettes with patients, both in general and as an aid to quitting smoking. This article provides a historical and contemporary overview of e-cigarettes and vaping. The reader will gain an understanding of e-cigarette usage, risks and benefits, the current position on use of e-cigarettes in mental health settings, and tips on how to take an e-cigarette/vaping history and how to offer advice about use. This is achieved in the context of recent publications and national recommendations. Although the focus is primarily on the mental health patient, the article is of benefit to all health and social care professionals to help them develop an understanding of e-cigarettes as a tobacco-smoking cessation or harm-reduction aid.

Young people who cut themselves may do so for reasons that go beyond diagnosis. Relevant processes include responses to trauma, coping, emotion regulation and cultural identification. Some clinicians regard those who self-harm negatively or consider one therapeutic approach to be suitable for all. This article explores the possible mechanisms involved when young people cut themselves and discusses therapeutic approaches in the light of these. Clinicians and researchers are encouraged to refine, develop and research interventions for young people who self-harm by cutting.

Although the majority of people with mental health problems have their treatment needs met within local services, the Department of Health's Specialised Service National Definition Set (Department of Health, 2002) outlines areas that are thought to require specialised services. Complex and/or treatment-resistant disorders (including severe and/or complex affective disorders) are one of ten mental health areas identified.