Euryale ferox, a nutritious aquatic plant, contains two varieties with significantly different health benefits. North Euryale ferox has much higher levels of resistant starch (a special type of starch that resists digestion) compared to South Euryale ferox, making it potentially more beneficial for gut health and diabetes management. The resistant starch in this plant acts as a prebiotic, promoting the growth of beneficial gut bacteria while inhibiting harmful bacteria, supporting overall digestive and metabolic health.