Effects of selenium and glutathione peroxidase on the biosynthesis of prostaglandin E and F by the ram vesicular gland Semantic Scholar Why Nature Chose Selenium ACS Chemical Biology Selenium is an essential nutrient that offers a variety of health benefits, primarily due to its role in antioxidant defense, immune support, and thyroid function. While selenium is vital for good Selenium + vitamin E protect cells and support thyroid function. , Deficiency can impair immunity, growth, and reproductionleading to poor fertility in goats. Thrifty Homesteader Facebook