Yellow Bell Pepper – Health Benefits, Lutein and Zeaxanthin, Nutritional Value, and Vitamin Profile

The bell pepper (Capsicum annuum) originated in South and Central America before spreading across Europe, where it became a hallmark of Hungarian and Mediterranean gastronomy. Botanically, it belongs to the nightshade family (Solanaceae) alongside tomatoes, eggplants, and potatoes. Today it is globally valued both as a crisp raw vegetable and as a foundational ingredient in cooked dishes.

The bright yellow hue of the fruit results from a high concentration of specific xanthophyll carotenoids—primarily lutein, zeaxanthin, and violaxanthin—combined with the absence of red capsanthin pigments. This gives yellow bell pepper a gentler, less astringent flavor than green pepper and a milder fruity sweetness than deep-red cultivars.

The standout clinical benefit of yellow bell pepper lies in its rich supply of lutein and zeaxanthin, the two xanthophyll carotenoids that form the macular pigment of the human retina. Acting as a natural optical filter against high-energy blue light and scavenging reactive oxygen species within photoreceptor cells, these compounds significantly lower the risk of age-related macular degeneration (AMD) and cataracts.

Additionally, the bioflavonoids and antioxidants in yellow bell pepper support vascular endothelial function, aid in blood pressure regulation, and inhibit the oxidative modification of LDL cholesterol. By stimulating collagen synthesis and counteracting oxidative stress, regular intake of yellow bell pepper promotes skin elasticity, supports nervous system resilience, and reduces fatigue.

Yellow bell pepper is a low-calorie vegetable with a low glycemic index (GI = 15), making it an excellent choice for weight-loss regimens and glycemic management. A 100 g serving of fresh yellow bell pepper provides approximately 27 kcal, 1.0 g of protein, barely 0.2 g of fat, and 5.3–6.0 g of carbohydrates responsible for its pleasant sweetness.

Each 100 g portion of fresh pepper also supplies roughly 1.7–2.0 g of dietary fiber, which nourishes beneficial gut microbiota and supports regular bowel function. Its mineral profile features abundant potassium (approx. 212 mg / 100 g) alongside phosphorus, magnesium, calcium, and iron, whose intestinal absorption is enhanced by the pepper's high endogenous vitamin C content.

Yellow bell pepper boasts an exceptionally high concentration of vitamin C (often reaching 130–150 mg per 100 g of fresh flesh) alongside substantial amounts of vitamin E, widely known as the 'vitamin of youth.' Its vitamin spectrum is further complemented by B-complex vitamins—particularly vitamin B6 (pyridoxine) and folate—as well as vitamin K and provitamin A.

To maximize the bioavailability of both water-soluble vitamin C and fat-soluble carotenoids (lutein and zeaxanthine) and vitamin E, enjoy raw yellow bell pepper in salads dressed with extra-virgin olive oil or flaxseed oil, or pair it with avocado, nuts, or eggs. It is equally delicious roasted, grilled, braised in vegetable stews, or blended into velvety roasted pepper soups.