Watermelon Daily: Hydration, Nutrients and Blood‑Pressure Benefits

Watermelon (Citrullus lanatus) is about 90 % water and contains fewer than 100 kcal per 250 g serving. It supplies vitamins A, B1, B6, C, minerals such as magnesium, potassium and iron, and the antioxidant lycopene, which is present in higher concentrations than in fresh tomatoes. The amino acid citrulline in watermelon is converted to arginine, helping to dilate blood vessels and potentially lower blood pressure.

Regular consumption supports hydration and fluid balance, assists liver and kidney detoxification, protects cells from oxidative damage, and boosts immune function. However, the fruit’s natural sugars are relatively high, so excessive daily intake could affect blood‑sugar levels or calorie balance for some individuals.