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Glossary Meta-Analysis

statistical technique combining results from multiple studies

A meta-analysis is a statistical technique that combines the results of multiple scientific studies to identify patterns, draw more robust conclusions, and increase the overall power of the findings. By aggregating data from various research papers, a meta-analysis can provide a more comprehensive understanding of a particular topic, such as the effectiveness of treatments for alopecia.

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Research

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research Meta-analysis identifies novel risk loci and yields systematic insights into the biology of male-pattern baldness

64 citations , March 2017 in “Nature communications”

This study identified 63 genetic loci associated with male-pattern baldness, uncovering genes and pathways that may help develop treatments and suggesting its connection to other human conditions.

research Meta-analysis of efficacy of platelet-rich plasma therapy for androgenetic alopecia

57 citations , May 2016 in “Journal of Dermatological Treatment”

This analysis suggests that platelet-rich plasma therapy may be promising for treating androgenetic alopecia, but further controlled trials with standardized measures are needed to confirm its efficacy.

research Increased prevalence of vitamin D deficiency in patients with alopecia areata: a systematic review and meta‐analysis

48 citations , April 2018 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology”

This study found that individuals with alopecia areata had significantly lower serum vitamin D levels and a higher prevalence of vitamin D deficiency compared to people without the condition.

research Meta-Analysis of Randomized Clinical Trials of Finasteride

21 citations , April 1998 in “Urology”

This review summarizes a meta-analysis suggesting that finasteride is most effective for improving symptoms and urinary flow in men with large prostates experiencing benign prostatic hyperplasia.

research Meta-analysis of photobiomodulation for the treatment of androgenetic alopecia

10 citations , November 2019 in “Journal of Dermatological Treatment”

This study revealed that photobiomodulation significantly improved hair density in androgenetic alopecia patients, with laser treatments being more effective than combined laser/LED treatments, while device style did not significantly affect outcomes.

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community Meta analysis of minoxidil only vs 5AR inhibitors

in Research/Science 58 upvotes 1 year ago

Oral dutasteride is the most effective for hair regrowth, followed by oral finasteride and minoxidil. Topical finasteride combined with minoxidil is recommended for those avoiding systemic DHT reduction.

community Should I switch from fin to dut after 3 months or is that too soon?

in Finasteride/Dutasteride 10 upvotes 2 years ago

The conversation suggests considering switching from finasteride to dutasteride for hair loss, with one person stating dutasteride is superior and another advising to wait at least 6 months before making a change. A third person asks for more details, implying it might be too soon to switch.

community How can I tell if I have scarring from dermastamping?

10 upvotes 3 weeks ago

The user is concerned about potential scarring from using a 1.5mm dermastamp for hair loss treatment and is advised to use shallower depths (0.5-0.75mm) and reduce frequency to avoid damage. They also use topical minoxidil and finasteride, and plan to stop stamping temporarily to assess changes.

community Most promising cures for baldness as of May 2026

70 upvotes 3 months ago

PP405 is the most promising future treatment for hair loss, aiming to reactivate dormant hair follicles. Clascoterone 5% is the most promising near-term drug, while current strategies include using finasteride or dutasteride to stabilize hair loss and minoxidil to stimulate growth.

community Hair Loss Causes Depression. Not Finasteride.

187 upvotes 7 months ago

Finasteride and Dutasteride do not cause depression or mood disorders; hair loss itself may be a more significant factor. Some users experience side effects from Finasteride, but it is generally well-tolerated.

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Learn

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learn Botox

What’s the science behind Botox injections for androgenetic alopecia? Small published studies and a 2025 meta-analysis report hair-count gains from scalp botulinum toxin injections, but nearly all of them lack control groups, and reviewers of the same literature call the evidence low-quality; the treatment is off-label and not approved for hair loss anywhere.

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