What Are Vegetables?
Vegetables are edible plant parts, typically savoury or less sweet than fruits, valued for their nutritional content including vitamins, minerals, fibre, and antioxidants. They can be eaten raw or cooked.
Classification by Plant Part
- Roots and tubers: carrots, beets, radishes, cassava, sweet potato, cocoyam.
- Bulbs: onions, garlic, leeks.
- Stems: celery, asparagus.
- Leaves: spinach, kale, lettuce, and Cameroonian leafy greens such as huckleberry (njama njama), bitterleaf, and cassava leaves.
- Flowers: broccoli, cauliflower.
- Fruits used as vegetables: tomatoes, cucumbers, bell peppers, garden eggs.
- Seeds and pods: peas, beans, corn.
Nutritional Profile
Vegetables contain complex carbohydrates and dietary fibre, are generally low in protein and fat, and are rich in vitamins (A, C, K, folate) and minerals (potassium, magnesium, calcium). They also contain phytochemicals such as flavonoids and carotenoids that help combat oxidative stress.
Health Benefits
- Digestive health: fibre supports regular bowel movements.
- Heart health: fibre lowers cholesterol; potassium supports healthy blood pressure.
- Weight management: low-calorie and high-fibre.
- Disease prevention: antioxidants and phytochemicals reduce the risk of chronic disease.
- Bone health: vitamin K, calcium, and magnesium support healthy bones.
Cooking Methods
Steaming best preserves nutrients; roasting enhances flavour by caramelizing natural sugars; sautéing is quick and preserves texture; boiling is common for root vegetables but can lead to nutrient loss if overcooked or the water is discarded.
