Watercress is a spicy aquatic vegetable rich in vitamins and minerals. It helps boost the immune system, promote wound healing, and maintain healthy collagen production. The beta-carotene and other carotenoids in watercress are potent antioxidants that reduce free radicals in the body, thereby lowering the risk of cancer and other chronic diseases. Additionally, watercress is rich in calcium, potassium, and magnesium, which support bone health and reduce the risk of osteoporosis. People on blood-thinning medication Warfarin should be cautious about their intake due to its high vitamin K content.