India, Oct. 20 -- Feeling tired all the time, having dull skin, brittle nails, or constant brain fog? These could be your body's way of signalling a nutritional deficiency. Dr Saurabh Sethi, a gastroenterologist trained at AIIMS, Harvard, and Stanford universities, explains in his October 20 Instagram post 8 subtle signs that indicate your body might be missing essential vitamins and minerals and how to fix them before they affect your overall health. (Also read: AIIMS trained gastroenterologist says if you love your liver, you'll want to try this 'matcha chia pudding recipe' )

Low levels of iron, vitamin B12, or magnesium could be to blame. "These nutrients fuel your metabolism and oxygen delivery. Without them, fatigue becomes constant...