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Brain-Derived Neurotrophic Factor (BDNF) slows down hair growth and promotes hair follicle regression.

Chickens exposed to loud noise can quickly regain hearing mostly due to repair of the tectorial membrane, not just hair cell regeneration.

The skin is a complex barrier that protects the body, regulates temperature, and helps with immune responses.

Understanding scalp anatomy is crucial for successful and safe scalp surgery.

Hair growth and health are influenced by stress and hormones.

Delayed ejaculation is a complex issue caused by psychological, biological, and lifestyle factors, requiring a holistic treatment approach.

IFN-γ and IL-2 are important for T cell activation in hair loss in mice.

Adipose-derived stem cells show promise in treating skin conditions like vitiligo, alopecia, and nonhealing wounds.

Using a vibrating device during injections can help reduce pain.

Glutamic acid helps increase hair growth in mice.

Finasteride can cause rare breast growth side effect, with varying recovery after stopping.

Testosterone is crucial for development, growth, and various body functions in mammals.

Stress may affect hair growth by influencing hair follicle development and could contribute to hair loss.

Using gelatin sponges for deep skin wounds helps bone marrow cells repair tissue without scarring.

Fear of hair-related issues causes significant mental distress, especially in high-stress women.

DNA methylation is essential for skin and hair follicle development, and could be a target for treating skin diseases.

Frontal fibrosing alopecia can mimic traction alopecia but has distinct features like facial papules and eyebrow thinning.

The document concludes that while some organisms can regenerate body parts, mammals generally cannot, and cancer progression is complex, involving mutations rather than a strict stem cell hierarchy.

Gut flora changes could potentially indicate depression, but more research is needed.

SOX2 is crucial for skin cell function and hair growth, and it plays a role in skin cancer and wound healing.

Androgen replacement therapy can improve libido and mood in women with severe androgen deficiency, but more research is needed on its long-term safety.

Anterolateral leg alopecia is a benign, nonprogressive hair loss condition on the lower legs that is not well understood and may resolve on its own.

Up to half of people experience itchy scalp, often due to skin conditions like seborrheic dermatitis or psoriasis, and treatments vary based on the specific cause.

Combining microneedling with platelet-rich plasma enhances skin repair and collagen production but may not offer significant extra benefits.

Understanding the scalp's five-layer structure is crucial for better surgical outcomes and fewer complications.

Changing the environment around stem cells could help tissue repair, but it's hard to be precise and avoid side effects.

SKPs are similar to adult skin stem cells and could help in skin repair and hair growth.

The document concludes that mouse models are helpful but have limitations for skin wound healing research, and suggests using larger animals and genetically modified mice for better human application.

Melatonin may help with sleep issues, depression, and cancer, but more research is needed.

Erectile dysfunction is increasingly common in men under 40, with many physical and psychological causes, and various treatment options available.