and adolescents, the elderly, or veterans, depending on the program. There may be a module that focuses on substance use disorder and its related issues and challenges, depending on the program. All of these topics are covered in order to equip participants with the knowledge, skills, and confidence necessary to recognize and respond appropriately to signs of mental illness and substance use disorders. Research on mental health first aid training A number of systematic reviews and meta-analyses have been carried out to review data concerning the effectiveness of mental health first aid (MHFA) training on participants' knowledge of mental health conditions and subsequent helping behaviors. A meta-analysis conducted in 2014 concluded that mental health first aid training increases participants' knowledge of mental health, reduces their negative views, and increases their supportive behaviors toward people with mental health issues. A meta-analysis conducted in 2018 concluded that mental health first aid training was found to enhance participants' knowledge, awareness, and beliefs about successful treatments for mental diseases. At follow-up, there were slight improvements in the amount of assistance provided to a person with a mental health problem, but the nature of the change in the offered behaviors was unclear. A systematic review conducted in 2020 showed that MHFA had conflicting effects on how trainees applied the skills they learned, but no influence on how beneficial their actions were for the mental health of the recipients. A systematic review conducted in 2020 focused on on youth and adolescent MHFA and found significant improvements in the understanding, recognition, stigmatizing perceptions, helping motivations, and helping behavior of youth and adolescent participants. The most frequently stated improvement was in knowledge and confidence, while the least frequently reported improvement was in helping behavior. By country Australia Mental Health First Aid Australia (MHFA Australia) is a non-profit organization in Australia that offers training and certification in Mental Health First Aid since the inception of MHFA in 2000. England In England, Mental Health First Aid is offered by Mental Health First Aid (England) which is a Community Interest Company (CIC), a social enterprise that offers MHFA training and certification since 2007. United States In the U.S., Mental Health First Aid (MHFA) is sponsored by the National Council for Mental Wellbeing, a non-profit which is the biggest group in the United States that certifies Mental Health First Aid instructors since 2008.They have trained more than 2 million people in MHFA.