The choice of diet is important in creating an excellent human capital. Islam has given the best guideline in choosing food so that it can be truly halal, good (thoyyiban), most quality and nutritious. Diet has a great impact on individual’s physical, mental and spiritual health. This is illustrated through cave dwellers (Ashabul Kahfi), a group of young people who have exceptional physical capabilities as well as mental and spiritual strengths that are far ahead of any members of their society. According to some tafseer scholars, diet pattern of the cave dwellers is explained in surah al-Kahfi. Study on halal diet has been widely practiced by researchers, but study on good, most nutritious and most quality diet from an Islamic perspective are still inadequate. This situation is a disadvantage to human being. This is because the philosophy of nutritional knowledge taught in the Quran and hadith is scientifically proven to bring benefits and prevent harm to individual physical and spiritual health. This study uses content analysis method where analysis is conducted on books of tafseer and hadith as well as journal articles that discuss the diet styles of today's society and its impact on spiritual and physical health. The results show that issues on food quality and dietary patterns greatly affect the spiritual and physical strength of an individual
