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Normal levels of DHT can reduce belly fat and increase muscle, but too much can lead to hair loss, prostate issues, and possibly heart disease.

Blocking 5α-reductase can harm memory and brain structure, and increase harmful brain changes in male mice used for Alzheimer's disease research.

Men, particularly those with hair loss, are more likely to get the virus, and those with prostate cancer may have milder symptoms. Testosterone's role in the disease is unclear, and the virus doesn't seem to harm male fertility. Women with PCOS might be at higher risk. More research is needed.

The study found no significant difference in stress hormone levels between people with alopecia areata and healthy individuals, suggesting that the disease is not caused by an overactive stress response system.

Various treatments exist for alopecia areata, but none are completely satisfactory; choice depends on age, disease extent, and preference.

Hair loss in men can be slowed or reversed with treatments like minoxidil and finasteride, but it resumes if treatment stops. It may also indicate early heart disease and obesity.

Plant adaptogens may help treat skin diseases and improve skin health, but more research is needed to fully understand how they work.

Tenofovir is more effective than adefovir for resistant hepatitis B, Fibroscan is good for assessing liver damage, regulatory T cells may help hepatitis C persist, and other insights into liver health and disease were found.

PCOS is a hormonal disorder causing symptoms like irregular periods and acne, and increases the risk of diabetes and heart disease.

The document concludes that various treatments for skin conditions are effective, but some require further research, and certain factors like gender and lifestyle can influence disease outcomes.

Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

Early exposure to germs may protect against autoimmune diseases, lack of sex increases alcohol preference in fruit flies, a potential baldness treatment could involve blocking a specific receptor, skin memory cells help prevent re-infection, high-fat diets can affect brain cells related to weight, and the link between social status, stress, and heart disease in primates is unclear.

A new mutation in the hairless gene causes hair loss and skin wrinkling in mice.

Exposure to too much androgen before birth might cause polycystic ovary syndrome later in life.

The document concludes that more research is needed to better understand and treat primary cicatricial alopecias, and suggests a possible reclassification based on molecular pathways.

Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.

Hoxc genes control hair growth through Wnt signaling.

Skin organoids are a promising new model for studying human skin development and testing treatments.

Intravital imaging helps us better understand stem cells in their natural environment and could improve knowledge of organ regeneration and cancer development.

Skin changes can indicate hormonal imbalances and help diagnose endocrine disorders.

The author now believes tricholemmal carcinoma is a rare type of infundibular squamous cell carcinoma and more research is needed on these tumors.

The book provides updated knowledge on hair disorders and new treatments for hair loss.

COVID-19 can cause various skin issues, but long-term skin problems are rare.

A 13-year-old boy had both lichen planus and vitiligo, suggesting a possible link between the two conditions.

Higher stress levels were found about two weeks before a heart attack.

Taking vitamin D might improve life for MS patients and reduce skin side effects from alemtuzumab treatment.

Psychological factors play a significant role in developing alopecia areata.

Understanding gene expression in hair follicles can reveal insights into hair growth and disorders.

Stem cell niches are crucial for regulating stem cell behavior and tissue health, and their decline can impact aging and cancer.

Insulin resistance is a key factor in polycystic ovary syndrome, but genetics may also contribute.