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    Did you mean second-to-fourth digit ratio?
    Glossary2D:4D ratio (second-to-fourth digit ratio)

    relative length of index to ring finger

    The 2D:4D ratio, also known as the digit ratio, refers to the comparative length of the second digit (index finger) to the fourth digit (ring finger). This ratio is often used as a biomarker for prenatal hormone exposure, with a lower ratio (shorter index finger relative to the ring finger) typically indicating higher exposure to testosterone, and a higher ratio indicating higher exposure to estrogen. This measure has been linked to various biological and behavioral traits, including susceptibility to certain diseases and conditions.

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      community Dutasteride only might be the best ROI

      in Finasteride/Dutasteride  174 upvotes 1 week ago
      Switching from finasteride to dutasteride can improve hair regrowth with fewer side effects for some users. Concerns about shedding, lack of improvement, and the long-term safety of oral minoxidil remain.

      community 4 month progress. Oral fin and topical min

      in Progress Pictures  1440 upvotes 1 year ago
      A user shared their 4-month hair regrowth progress using oral finasteride and topical minoxidil, reporting no side effects and positive feedback on their appearance. The post sparked debate, with many users doubting the authenticity of the photos, while others congratulated the user on their impressive results.

      community 18 month hairline progress pictures.

      in Progress Pictures  825 upvotes 1 year ago
      A user's 18-month hairline progress using minoxidil, finasteride, Nizoral, microneedling, and scalp massage. They share their routine and discuss treatment effectiveness and photo order confusion.

      community Should I get transplant #4 or just shave my head?

      in Transplants  171 upvotes 1 year ago
      A 36-year-old considering a fourth hair transplant is advised to either shave his head or use a hair system due to poor results from previous transplants and late medication use. He plans to consult top surgeons and adjust his current treatments, including finasteride and minoxidil.