Introduction: Women aged ≥ 45 years are known to experience various menopausal symptoms due to reduced oestrogen levels. Changes associated with cutaneous ageing, such as wrinkles and sagging, are also prominent in women in this age group. Numerous studies have evaluated the usefulness of individual basic nutrients and essential components, such as amino acids and vitamins, in menopausal women. The aim of this study was to comprehensively assess the effects of supplements containing amino acid and vitamin combinations on menopausal symptoms and age-related changes in the skin.
Methods: This is a randomised, placebo-controlled study on the effects of a supplement containing three types of amino acids [leucine, glutamine and arginine (LGA)] and 11 types of vitamins in 37 middle-aged women. The participants ingested either the test substance or a placebo twice daily for 8 consecutive weeks, at the end of which time the efficacy and safety of the test substance were assessed based on subjective symptoms of fatigue, Simplified Menopausal Index (SMI) score, the grade and number of wrinkles at the corners of the eyes, results of an analysis of the stratum corneum of the cheek and blood test results.
Results: None of the participants experienced adverse events, and all items assessed in our survey of subjective symptoms of fatigue showed a significant decrease in the test substance group (LGA group). Additionally, the SMI score of the LGA group was significantly lower than that of the placebo group. The LGA group showed significant improvement in the grade of the wrinkles in the corners of the eyes and the number of wrinkles, and the stratum corneum cell area declined significantly in the LGA group compared to the placebo group at the end of the study.
Conclusion: These results indicate that the vitamin-containing amino acid supplement improved menopausal symptoms and age-related changes in the skin (wrinkles).
Trial Registration: UMIN000029830.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8484415 | PMC |
| http://dx.doi.org/10.1007/s13555-021-00589-7 | DOI Listing |
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