Selenium is an essential micronutrient in the human diet. It is a constituent of selenoproteins, linked to cysteine, and is involved in the defense against oxidative stress. Few studies suggested a role of selenoproteins in the prevention of chronic degenerative disorders, including Parkinson's and Alzheimer disease, cancer, cardiovascular disease, atherosclerosis, stroke, and infertility. On the other hand, concerns were raised about a possible association of selenium supplementation with increased risk of developing insulin resistance and Type 2 diabetes. The objective of this article is to briefly review the results of the observational (cohort and case-control) studies as well as of the randomized controlled trials of selenium supplementation and risk of metabolic and cardiovascular disorders.
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- Maternal nutrition during pregnancy significantly affects both mothers and their babies, influencing health outcomes and the risk of diseases later in life.
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