Emotional, psychological, and social well-being are all parts of mental health. It affects behavior, perception, and cognition. It also affects how they cope with stress, interact with others, and make decisions. The World Health Organization lists mental disorders as a worldwide issue (WHO). The WHO has identified mental disorders as a health burden that should no longer be disregarded because one in four people experience a mental disease at some point in their lives. There was mention of the need for, among other things, evidence-based practice throughout a life course and a multidisciplinary approach to handle this problem in the WHO's Comprehensive Mental Health Action Plan 2013-2020. Maintaining a better state of health and reducing the risk of mental problems in both children and adults are made possible by eating a diet that is properly balanced. However, because each person consumes a variety of different goods at the same time, it can be challenging to evaluate individual components of a comprehensive dietary pattern and identify their impact. Fruits and vegetables are good for overall health and may even be more crucial than previously thought. A larger consumption than the widely advised 400 g is required to prevent cardiovascular disease, cancer, and early mortality. Although there are a lot of potential factors that could help them have a good impact, the process by which they affect mental health is yet unknown. Among them, there are certain nutrients that are known to be associated with mental health and for which fruit and vegetables are suggested as valuable sources in diet, such as complex carbohydrates and fiber, being connected to glycemic index, C vitamin, B vitamin, carotenoids, potassium, and polyphenols. The other theories involve either the potential for a reverse mechanism (greater mental health may encourage better diet, including higher intake of fruits and vegetables), or psychiatric explanation (following better diet, including higher fruit and vegetables intake may promote more positive emotions and better mental health).