Persistent fatigue could signal a vitamin B12 deficiency, a concern affecting nearly half of the Indian population. Cardiologist Dr. Alok Chopra highlights B12's crucial role in energy production, DNA synthesis, and nervous system function. Found in fish, poultry, and fortified foods, B12 deficiency can lead to fatigue, pale skin, and neurological issues. While supplements and fortified foods can help, Dr.source https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/feeling-exhausted-all-the-time-cardiologist-talks-about-why-vitamin-b12-is-essential/articleshow/122105793.cms