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This study found that consumption of dietary supplements and sports nutrition may lead to therapeutic and cosmetic improvements, benefiting skin, hair, and nails while potentially enhancing athletic performance.

This study found that a marine-extract dietary supplement significantly reduced hair shedding and increased hair diameter in premenopausal women with subclinical hair thinning or hair loss after 6 months of use.

This study found that an oral marine protein supplement significantly increased hair growth and reduced hair shedding in women with temporary thinning hair over 90 days compared to a placebo.

In this study, supplementing low-protein diets with 0.75% methionine maintained growth performance, improved fur quality, enhanced nutrient utilization, and supported intestinal microbiota balance in blue foxes, with significant results on several biochemical parameters and nutrient digestibility observed.

This study found that adding methionine to a low-protein diet improved wool production and feed efficiency in Angora rabbits by promoting hair follicle development through mechanisms involving IGF1, KAP, and versican signaling.

This review of clinical data found that an oral marine supplement increased hair growth and thickness while reducing hair loss in women and men with thinning hair, suggesting it is a safe and effective treatment.

This study found that oral collagen peptides increased the expression of genes related to epidermal and hair cycle development in hairless mouse skin.

This study found that oral collagen peptides increased expression of genes associated with epidermis development and the hair cycle in hairless mice, providing insights into their potential skin benefits.

This study demonstrated that mink hair growth and pelt quality significantly depend on dietary protein levels and DL-methionine supplementation during the growing-furring period.

This study found that good quality protein supplements or rumen-protected methionine increased fiber yield in Angora goats and, to a lesser extent, in Cashmere goats.

This study found that protein supplements combined with micronutrients reduced hair loss more effectively after sleeve gastrectomy in women, compared to routine multivitamins alone.

In this study, a dietary protein deficiency was identified as the cause of alopecia and weight loss in captive western lowland gorillas, and protein supplementation improved their condition.

This account describes the experience of recommending Help Hair Protein Shake for patients at Medical Hair Restoration Australia over 1.5 years, but reports no specific clinical results.

This article reviews the link between certain dietary supplements, such as vitamins B6/B12, iodine, whey, and muscle-building products, and acne, emphasizing the need for dermatologists to discuss supplement use with patients; it reports no new results.

This study found that fitness coaches and registered dietitians/nutritionists were the primary sources of information for bodybuilders, who showed moderate nutrition knowledge, while gender, exercise history, and sessions impacted dietary supplement use, and reported adverse effects included skin rashes and increased liver enzymes.

This source highlights the increasing use of nutritional supplements among patients with androgenetic alopecia, noting positive effects on hair thickness and density in controlled trials, while emphasizing the need for further research to understand their safety and efficacy.

This case report describes a 33-year-old Indian male with Cronkhite-Canada syndrome who experienced complete symptom recovery within 5 months after starting a high protein diet, proton pump inhibitors, and zinc-vitamin supplements.

This study found that adenine supplementation in cultured human follicle dermal papilla cells stimulated proliferation and reduced senescence, possibly through AMPK activation and increased cellular NAD+ levels.

This study found that a treatment regimen including dietary changes, oral contraceptives, fertility drugs, Glucophage or Metformin, and nutritional supplements significantly improved hormonal and immune markers and reduced clinical symptoms like ovulation and menstrual disorders in PCOS patients over three months.

This study found that L-glutamine supplementation in Hanwoo steers under heat stress did not affect growth performance or muscle and adipose tissue gene expression but was associated with increased immune cells and reduced HSP90 expression.

Results are not reported in this study, which investigated the effects of radiation on hair follicles and evaluated various cellular responses and signaling pathways, particularly focusing on WNT signaling and the impact of Wnt3a treatment.

This study observed that microneedling-induced microinjury promotes hair growth via a TNF-α, Wnt, and VEGF pathway, while blocking TNF-α inhibits this process.

This research highlights dermatologists' concerns about the widespread use of sports supplements, noting that nutritional supplements associated with muscle-building and appearance enhancement can lead to dermatological issues like acne and alopecia, while potentially containing harmful substances such as undisclosed anabolic steroids.

This study found that an 8-week supplementation with specific probiotic strains improved hormonal markers and oxidative stress while decreasing inflammation in women with PCOS, although clinical symptoms like acne and hirsutism showed no significant improvement compared to the placebo group.

This discussion reviews the trend towards nonsurgical hair loss treatments, emphasizing that options like platelet-rich plasma therapy are increasingly used despite not being covered by Canadian health insurance; it presents no clinical findings.

This review discusses changes in hair follicle characteristics and stem cell dynamics as indicators of aging in mice, noting increased occurrences of white hairs and curved hair follicles at older ages.

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.

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 review discusses nutritional factors important for hair growth and the need to assess and address deficiencies in cases of alopecia, but does not report new clinical results.

A Western diet may increase acne risk, while a Mediterranean diet and certain supplements can help reduce it.