Cracked corners of the mouth (Angular Cheilitis)
Those small, painful splits at the corners of your lips are called angular cheilitis, and they are one of the most reliable early signs of B2 (riboflavin), B3 (niacin), or B12 deficiency. A 2020 review published in the Journal of Nutrition found that angular cheilitis appears significantly more often in individuals with low riboflavin and iron status, two deficiencies that run quietly high in Indian women of reproductive age, partly because rice-dominant diets are low in riboflavin and partly because menstrual blood loss goes unaddressed for years.