The Gut–Brain–Hormone Axis in the Light of the Qur’an and Sunnah: An Integrative Study of Islamic Dietary Principles and Contemporary Nutritional Science

Abstract

The human gut functions as an endocrine and neurochemical organ, producing and regulating hormones such as dopamine, serotonin, ghrelin, and cortisol. Disruption of this delicate balance whether through poor diet, stress, or spiritual neglect can lead to mood disorders, metabolic dysfunction, and loss of eudemonia, probiotics and prebiotics, by sustaining healthy gut microbiota, promote hormonal equilibrium and emotional stability. This research investigates how the Qur’an and Sunnah of Prophet Muhammad ﷺ provide dietary and ethical guidance that aligns with modern gut–hormone science. Foods like honey, dates, milk, barley, and vinegar are frequently mentioned in scripture to possess properties that regulate gut flora and endocrine responses. Through qualitative scriptural analysis and synthesis of biomedical research, this paper argues that adherence to ṭayyib (wholesome) and moderate nutrition, as prescribed in Islam, fosters neuroendocrine harmony and spiritual peace are termed here as Divine Bliss.