Peas contain the carotenoids lutein and zeaxanthin. These nutrients help protect your eyes from chronic diseases, such as cataracts and age-related macular degeneration. Lutein and zeaxanthin act as filters from harmful blue light, which contributes to cataracts and macular degeneration.

Reference:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3705341/

Peas are rich in Coumestrol, a nutrient that plays a role in protecting against stomach cancer. A 2009 study done in Mexico City showed that daily intake of peas and other legumes lowered the risk of stomach cancer by 50%.

Peas are also high in fibre, which helps move food through your gut for easier digestion.

Reference:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2787087/

Peas are packed with antioxidants, which help build your immune system.

Anti-inflammatory nutrients in peas have been associated with lowering the risk of inflammatory conditions like diabetes, heart disease, and
arthritis.

Inflammation and stress caused by free radicals (oxidation) can contribute to plaque formation along blood vessel walls. Omega-3 and omega-fatty acids found in peas help to reduce oxidation and inflammation and prevent plaques from forming.

In addition, magnesium, potassium, and other minerals found in peas can lower your risk of high blood pressure.

Reference:
https://www.webmd.com/diet/health-benefits-peas

Peas are loaded with fibre and protein, which help to regulate the way you digest starches. The protein and fibre in peas slow the breakdown of carbohydrates and helps to control your blood sugar. Studies show that eating a high-protein diet decreases postprandial (after meals) blood sugar in people with type 2 diabetes.

Peas also have a low glycaemic index. This means that you are less likely to have sudden spikes in blood sugar after eating them.

Reference:
https://pubmed.ncbi.nlm.nih.gov/14522731/

Peas are a great source of iron. Iron deficiency is the leading cause of anaemia. If you are iron deficient, your body can't make enough healthy oxygen-carrying red blood cells, thereby causing haemoglobin deficiency. Iron helps combat fatigue and gives you strength.

Peas are an excellent source of vitamin C, which plays a significant role in the production of collagen. Collagen helps keep the skin firm and glowing. The antioxidants which are present in peas, such as flavonoids, catechin, epicatechin, carotenoid and alpha carotene, help prevent signs of ageing too.

Being rich in fibre and one of the best plant-based proteins makes peas a satisfying component of a meal. They are also a useful vegan source of iron, which is needed for making red blood cells and transporting oxygen around the body. Peas also have a low glycaemic index. This means that you are less likely to have sudden spikes in blood sugar after eating them.