Malnutrition is a major global health issue, with all forms of it posing significant dangers to human health. Globally 800 million people are under nourished. In the modern world, undernutrition and overweight are the two main causes of malnutrition, especially in low- and middle-income countries. Malnutrition can manifest in a variety of ways, including undernutrition (wasting or stunting), vitamin or mineral deficiency, obesity, or overweight, and the noncommunicable diseases that result from eating poorly. More than 3.5 billion people are at risk of calcium deficiency and 90% of those at risk, are in Africa and Asia. Worldwide 25% of people have anaemia, of which 50% of it is due to iron deficiency. Malnutrition has a significant and enduring impact on individuals and their families, as well as on communities, countries, and the global economy. A healthy diet is essential for both development and health. Better nutrition is linked to stronger immune systems, safer pregnancies and deliveries, a lower risk of non-communicable diseases (such as diabetes and cardiovascular disease), and longer life spans. A nourished individual can break the cycles of poverty and hunger gradually and is also more productive. For optimal health, good food consumption control and nutritional management are crucial. You may preserve or improve your health by knowing what constitutes a healthy diet and paying attention to what you eat. Health literacy is therefore urgently needed. Translational nutrition is a multidisciplinary endeavor involving nutrition science, food science, and health science, with a foundation in fundamental life sciences and a requirement for good communication. Translating nutrition research into practical applications is the aim of translational nutrition.