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AGA causes hair loss by shrinking hair follicles due to DHT binding, and can be treated with finasteride and minoxidil.

Insulin resistance and obesity are key factors in the development and worsening of polycystic ovary syndrome, and lifestyle changes are important for managing it.

The Rotterdam Study aims to understand various diseases in older adults.

The document provides a method to classify human hair growth stages using a model with human scalp on mice, aiming to standardize hair research.

Laser hair removal is the most requested cosmetic procedure and has become a scientifically-based treatment suitable for all skin types.

Hair loss in men is common, treatable, but not curable.

The conclusion is that accurate diagnosis of different types of hair loss requires good teamwork between skin doctors and lab experts.

Lower doses of treatments for hirsutism and acne in PCOS are effective and cause fewer side effects.

Minoxidil treats hair loss, promotes growth, has side effects, and has recent patents.

Estrogen therapy can reduce skin aging but has cancer risks.

Laser hair removal effectiveness depends on targeting hair structures without harming the skin, and improvements require more research and expert collaboration.

The WNT signaling pathway is important in many diseases and targeting it could offer new treatments.

Protoporphyrin IX is useful in cancer treatment but can cause health problems if not properly regulated.

Estrogen replacement can improve skin health in menopausal women but doesn't reverse sun damage or prevent hair loss.

Horizontally sectioned scalp biopsies are more reliable for diagnosing hair loss in women when three samples are taken instead of one.

Some vitamins and minerals like vitamin D and iron can help with certain types of hair loss, but more research is needed for others.

Modulating BMP activity changes the number, size, shape, and type of ectodermal organs.

Human hair follicle organ culture is a useful model for hair research with potential for studying hair biology and testing treatments.

Low doses of some substances can be beneficial, while high doses can be harmful or toxic.

Stress can stop hair growth in mice, and treatments can reverse this effect.

Oxidative stress contributes to hair graying and loss as we age.

Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

Finasteride and minoxidil are effective for hair regrowth, while treatments for alopecia areata have varying success and continuous treatment is necessary.

Adult female acne treatment should be personalized, considering individual preferences and pregnancy, using various topical and oral medications while managing side effects and resistance.

Melatonin helps regulate hair growth and protects the hair follicle from stress.

UV radiation can help sterilize wounds and promote healing but requires careful use to avoid damaging cells.

Fullerenes show potential in skin care but need more safety research.

New treatments for Alopecia Areata show promise but need to be more effective and affordable.

Hair ages due to genetics and environmental factors, leading to graying and thinning, with treatments available for some conditions.