12 Unexpected Causes of Vitamin Deficiencies You Might Be Missing

12. The Overlooked Role of Hydration in Vitamin Absorption

Hydration is often discussed in the context of overall health, but its role in vitamin absorption and metabolism is frequently underestimated. Water-soluble vitamins like vitamin C and B-complex vitamins require adequate hydration to be effectively transported and utilized by the body. Dehydration can impair kidney function, leading to the inefficient excretion of waste products and disrupting electrolyte balance, which can impact the absorption of essential minerals like magnesium and potassium. Additionally, chronic dehydration can slow digestion and compromise gut health, further reducing the body's ability to extract nutrients from food. Those who consume excessive amounts of caffeine or alcohol may experience even greater dehydration, leading to an increased risk of vitamin depletion. Ensuring proper hydration—at least eight glasses of water per day or more depending on individual needs—can enhance vitamin bioavailability and support overall nutrient balance.