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In this study, antioxidant vitamins A, C, and E were found to help protect against intestinal damage caused by radiation in rats, with vitamin E being the most effective.

This study reported that among obese women with PCOS, neither early time-restricted eating (eTRE) alone nor combined with probiotics showed significant improvements in blood pressure, inflammatory markers, oxidative stress, or antioxidant capacity compared to a standard reduced-calorie diet.

This study demonstrated that dietary cupric citrate improved growth performance and nutrient utilization in broilers, while also altering their intestinal microbiota and increasing the pH in the duodenum and jejunum.

This study found that supplementing pregnant Hanshan white cashmere goats' diets with selenium yeast led to higher birth weights, improved cashmere quality and yield, and enhanced hair follicle development in their offspring, possibly through increased antioxidant capacity.

This study found that administering melatonin for 12 weeks to women with PCOS significantly reduced hirsutism, testosterone, and inflammation markers, while enhancing antioxidant levels compared to a placebo.

This study demonstrated that tocotrienol supplementation increased hair number in individuals with hair loss compared to a placebo, likely due to its antioxidant effects.

This study found that taurine dietary supplementation could reduce lipid metabolism, enhance antioxidant capacity, and improve hormone levels in Angora rabbits, with 0.2% taurine increasing wool production.

In this study of White cashmere goat ewes and their offspring in Tibet, selenium and vitamin E supplementation improved antioxidant capacity and serum biochemical indices and enhanced secondary hair follicle development in lambs, but did not significantly alter fecal microbiota composition.

In this case report, an 80-year-old woman experienced darkening of previously grey hair, which may be linked to vitamin B supplementation, though its effectiveness is typically associated with reversing greying only in the presence of an initial vitamin B deficiency.

This study found that individuals with premature hair graying had significantly lower levels of antioxidants compared to controls, but the severity of graying did not significantly correlate with oxidative stress levels.

This narrative review found that post-COVID-19 hair loss, particularly telogen effluvium, poses a significant mental and social burden, with minoxidil potentially aiding recovery, although more clinical research is needed to confirm its effectiveness.

In this study, researchers found that polysulfides in human hair keratin contribute to hair strength and antioxidant capacity, with sulfur supplementation enhancing hair strength and cuticle structure amid oxidative stresses such as UV radiation.

This review examines the role of oxidative stress in male hypogonadism associated with noncommunicable chronic diseases and discusses various management strategies, but it presents no new clinical findings.

This study found that a 12-week supplementation with a combination of insulin sensitizing agents, antioxidants, and vitamins significantly improved menstrual cyclicity, acne, and hirsutism in women with PCOS, with additional weight loss benefits in obese subjects.

This study observed that Egyptian patients with discoid lupus erythematosus have significantly lower serum vitamin D3 and antioxidant levels compared to healthy controls, suggesting potential benefits of vitamin D3 and antioxidant supplementation.

This study found that dietary supplementation with 0.2% MSM improved hair quality in kittens and had no significant negative effects on their growth performance, antioxidant capacity, or gut microbiota.

The hypothesis in this study is that probiotic supplementation could improve hormonal, metabolic, inflammatory, and antioxidant markers in individuals with PCOS compared to a placebo, although results are not yet reported.

This study found that sheep with deficiencies in zinc, copper, and vitamin A exhibited symptoms like weight loss, skin disorders, and abnormal hematological and antioxidant enzyme levels compared to healthy sheep, suggesting that dietary supplementation of these nutrients could prevent these health issues.

This review suggests that quercetin supplementation may benefit ovarian functions and hormonal levels in polycystic ovary syndrome, though further high-quality trials are needed for confirmation.

This review discusses zinc supplementation as a complementary therapy for chronic hepatitis C, noting its potential benefits in improving treatment outcomes and reducing side effects, but reports no new clinical results.

This review indicates promising potential for cinnamon supplementation to improve metabolic outcomes in PCOS, but more clinical trials with higher doses and longer durations are needed to confirm these effects.

This review investigates the potential benefits of cinnamon supplementation alongside lifestyle changes for managing obesity and polycystic ovary syndrome, but it reports no new clinical results.

This study found that maternal Nano-Se supplementation in cashmere goats improved antioxidant status and promoted secondary hair follicle development in fetuses at 110 days.

This study found that OM-X® supplementation effectively prevented adverse biological changes caused by vitamin C deficiency in SMP30/GNL KO mice, improving energy maintenance, antioxidant capacity, and protein synthesis.

This study found that combined dietary supplementation of sodium hyaluronate and eggshell membrane was associated with various improvements in skin and coat health markers in healthy Ragdoll cats.

This study found that fish oil supplementation in male Wistar albino rats helped maintain hair shaft structure and improved amino acid composition, while reducing harmful protein compounds associated with diabetes and hypercholesterolemia.

This literature review reports that multivitamin supplementation can enhance hair density and quality in people with suboptimal nutritional status but warns that excessive intake of certain vitamins and minerals may cause hair loss.

This study found that supplementing with 1.5% α-ketoglutaric acid significantly improved the performance, hair follicle density, and antioxidant capacity in Rex rabbits, potentially by enhancing the Wnt signaling pathway and reducing amino acid catabolism.

This article discusses how nutritional and environmental factors, along with antioxidant supplementation, may improve hair growth by mitigating the effects of androgens and reports no new clinical results.

This article addresses the need to screen for nutrient deficiencies in patients with hair loss but reports no new findings, noting that supplementation without deficiency may not be beneficial and could pose risks.