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Facial aging is caused by natural processes and external factors, and can be managed with preventative measures and a variety of treatments tailored to individual needs.

Human hair provides more UV protection when aligned and at higher angles, but the scalp still gets UV exposure.

Severe alopecia areata greatly impacts quality of life, mental health, and daily activities.

Ferulic acid helps stabilize vitamins C and E for better skin protection from the sun, certain compounds may promote hair growth, atopic dermatitis patients have lower skin defense molecules, older men are more likely to get a type of skin cancer, and a substance called relaxin may prevent age-related skin thickening.

The guidelines advise against using testosterone and DHEA in women for most conditions due to safety and effectiveness concerns, but suggest considering testosterone for postmenopausal women with low sexual desire.

Fat tissue treatments may help with wound healing and hair growth, but more research with larger groups is needed to be sure.

Finasteride helps treat prostate issues and may prevent prostate cancer in high-risk men.

Metformin helps with menstrual cycles and insulin levels in PCOS but is less effective for hair growth, diabetes prevention, and weight loss, and may improve fertility and reduce diabetes risk.

Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.

Weight loss and metformin don't significantly change vaspin levels in women with PCOS.

Testosterone therapy is beneficial for women's health and does not cause masculinization or liver damage, and it protects the heart and breasts.

Skin doctors should recognize and treat conditions like hair-pulling and skin-picking early, often using therapy and medication, to help 50-70% of patients.

The document concludes that various cosmetic and drug treatments are available for hirsutism, and some new drugs show promise.

Pulsed dye laser and hydrogel dressings effectively treat hypertrophic scars.

More East Asians are accepting and getting facial plastic surgery, with a focus on natural-looking results and using both surgical and nonsurgical methods.

Lasers are effective and safe for various medical treatments, including cancer, wound healing, and skin conditions.

Blocking the enzyme 5α-reductase can shrink the prostate and help treat enlarged prostate issues.

Blocking BACE1 and BACE2 enzymes causes hair color loss in mice.

Different types of PCOS have different levels of metabolic problems, with the most severe type showing the highest disturbances.

CD98hc's role in skin health decreases with age.

The PCOSQ-50 is a valid and reliable questionnaire for measuring quality of life in Iranian women with PCOS.

Eye exams are crucial for kids with 13q deletion syndrome, tamoxifen can cause vision loss, Propecia may lead to cataracts, Lipoid Proteinosis causes skin bumps, and OCT is useful for diagnosing macular diseases.

The photolyase-based device significantly changed the size and heat of potential skin cancer areas in patients.

Taking Propecia might lead to the development of cataracts.

Short telomeres contribute to aging and cancer, and while telomerase can delay aging, it may also promote cancer.

Progesterone treatment improved seizures in a woman with menstrual cycle-related epilepsy, but a wrong medication worsened her condition.

Monkeys with hair loss during pregnancy showed higher stress hormone levels and invested differently in their offspring.

The new oral testosterone pill normalized testosterone levels and lowered SHBG in men with low testosterone.

The document concludes that careful diagnosis is crucial for chromosome 13q deletion syndrome, tamoxifen can cause reversible eye damage, finasteride may be linked to cataracts, and OCT is useful for diagnosing macular diseases.

Placental mesenchymal stem cells and their conditioned medium significantly improve healing in local radiation injuries.