When it comes to boosting the immune system, most people immediately think of citrus fruits like oranges and lemons. But surprisingly, there’s a humble, inexpensive vegetable that packs an even more powerful vitamin C punch—and it’s often overlooked.
Meet the Underrated Superfood: Water Spinach (Morning Glory)
Known locally as rau muống in Vietnam, water spinach is a common green vegetable sold at wet markets and street stalls for just a few thousand dong. Despite its affordability and simplicity, it’s a nutrient powerhouse, especially when it comes to vitamin C.
More Vitamin C Than Citrus Fruits
Studies have shown that 100 grams of cooked water spinach can contain more vitamin C than an equivalent serving of oranges or lemons. Vitamin C is essential for:
Strengthening the immune system
Supporting healthy skin and collagen production
Aiding in iron absorption
Acting as an antioxidant to fight free radicals
Consuming this leafy green regularly can help you meet your daily vitamin C requirements—without spending much at all.
Other Impressive Health Benefits
Aside from vitamin C, water spinach is also rich in:
Iron – Supports red blood cell production
Calcium – Promotes strong bones
Fiber – Aids digestion and prevents constipation
Vitamin A – Protects eye health
It also contains flavonoids and polyphenols, which contribute to its anti-inflammatory and detoxifying properties.
Easy to Cook, Easy to Love
Water spinach is incredibly versatile in the kitchen. It can be:
Stir-fried with garlic
Blanched and served with soy or sesame dressing
Added to soups or noodle dishes
Eaten raw in salads (young shoots)
Its mild flavor and soft texture make it a favorite across generations.
Why Many People Still Don’t Know
Despite being common in Southeast Asia, this vegetable is still underappreciated globally. In many countries, it's not even sold in mainstream supermarkets, and its nutritional value often goes unnoticed.
But with rising awareness of plant-based nutrition and immune-boosting foods, water spinach deserves its place on the superfood list.