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Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.

Hair grays due to oxidative stress and fewer functioning melanocytes.

Early treatment of PCOS in teens is crucial to prevent long-term health issues like diabetes and heart disease.

Testosterone is important for men's sexual function, may help some women's sexual desire, while other hormones and neurotransmitters also play complex roles in sexual behavior.

Cyproterone acetate is the preferred treatment for women's hyperandrogenism when estrogen/progestogen use is safe.

Hidradenitis suppurativa is caused by genetic factors, inflammation, bacteria, hormones, and lifestyle factors like obesity and smoking.

Products should be called 'sperm-safe' only after thorough, well-designed tests.

The study mapped yak skin cells to understand hair growth better.

People who are more materialistic often expect life changes from buying things, leading to more debt and credit misuse.

Lymphatic vessels are essential for health and can be targeted to treat various diseases.

Pantethine may boost the immune system's ability to fight sarcoma.

The conference emphasized innovative solutions for global challenges, including disaster architecture, education, health, and economic impacts.

Continuous research and innovative strategies are essential for sustainable development.

Hair analysis is better than urine and blood for detecting past drug use.

Your skin is like an ecosystem, with its own community of microbes and substances that interact and affect its health.

A gene mutation causes early keratinocyte maturation leading to hair loss in Olmsted syndrome.

More research is needed to understand how testosterone is maintained in adult males.

Use "female pattern hair loss" term, assess androgen excess, treat with minoxidil and other medications if needed.

New understanding of hair loss could lead to better treatments.

Model improves accuracy in predicting hair loss effects.

Alopecia in captive rhesus macaques is affected by season, sex, age, housing, and stress, with complex links between stress hormones and hair loss.

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

Hair loss patterns differ between males and females due to 5 master regulators and JAK-STAT signaling affects hair growth.

Adults should not consume more than 255 micrograms of selenium per day to avoid risk of hair loss and other side effects.

Androgen levels do not determine the type of PCOS symptoms in young females.

Women with PCOS are more than twice as likely to develop nonalcoholic fatty liver disease.

High levels of prolactin in the blood can be linked to widespread hair loss.

The C3H/HeJ mouse model is useful for studying and testing treatments for alopecia areata.

Oestrogens help maintain healthy skin, heal wounds, and may protect against skin aging and cancer.

Hormonal contraceptives can help treat acne by affecting sebum production and androgen levels.