Disruptive consequences of monosodium glutamate on male reproductive function: A review

• Published in: Current research in toxicology 2024-01, Vol.6, p.100148, Article 100148
• Main Authors: OLUWOLE, David Tolulope, EBIWONJUMI, Oladipupo`Samuel, AJAYI, Lydia Oluwatoyin, ALABI, Olubunmi Dupe, AMOS, Victor, AKANBI, Grace, ADEYEMI, Wale Johnson, AJAYI, Ayodeji Folorunsho
• Format: Article
• Language: English
• Subjects: Hormone, testes; Male reproduction; Monosodium glutamate; Review; Sperm
• ISSN: 2666-027X; 2666-027X
• DOI: 10.1016/j.crtox.2024.100148

[Display omitted] •Monosodium glutamate (MSG) a food additive has multi-system effects.•MSG damages male reproductive accessory organs like prostate glands and epididymis.•MSG reduces serum concentration of testosterone, gonadotropin-releasing hormone and luteinizing hormone.•MSG alters sperm indices and male sexual behaviour.•Safety guidelines on MSG‘s tolerable limits in a biological system should be revisited. Monosodium glutamate (MSG) is one of the most extensively used flavour enhancers worldwide. Although it is widely regarded as a safe food additive with no recommended daily dosage, its over-consumption has been associated with notably pathophysiological events in various tissues and organs of the body. Previous studies have reported of the neuro- cardio- and hepato- toxic effects of its excessive exposure. Moreover, the food additive instigates metabolic dysfunction. It has been established that MSG damages male reproductive accessory organs like prostate glands and epididymis. In addition, it impairs serum enzymatic activities and serum levels of testosterone, gonadotropin-releasing hormone, luteinizing hormone and cholesterol. Reduced sperm count, sperm motility, sperm morphology, and sperm viability, imbalances in male reproductive hormones, alongside alteration in the histoarchitecture of the testes and other male reproductive tissues have also been connected with excessive exposure to MSG. Literature reports affirm the link between the over-consumption of MSG and reproductive organ weight and male sexual behaviour. This review article addresses the multi-systemic effects of exposure to MSG and the possible mechanism of action of the compound with a focus on the negative implications of the food additive on male reproductive functions and the possible role of natural antioxidants in male reproductive functions. carefully selected keywords were used during the literature search to gather credible and up-to-date information about the subject matter.