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The conclusion is that formalizing how past decisions influence current health technology assessments could improve the credibility and defense of coverage decisions.

Finasteride exposure harms tadpole reproduction and hormone balance.

Men who start puberty later may have lower sperm quality and different hormone levels in adulthood.

5α-Reductase inhibitors can negatively affect male sexual function and, in some cases, significantly reduce sperm count, but these effects may be reversible.

Dihydrotestosterone treatment can help penis growth in boys with 5α-reductase deficiency but doesn't fully normalize size after puberty.

Anabolic-androgenic steroids are dangerous and educating people about their risks is essential.

Some common medications may harm male fertility by affecting hormones, sperm production, and sexual function.

Finasteride may decrease semen quality but not harm sperm production, and stopping the drug can improve semen quality; hyperprolactinemia can cause infertility but is treatable with medication.

Melatonin improved sheep reproduction, being more beneficial and cost-effective in males.

Certain maturity signs appear before and after the first release of sperm in boys.

Anabolic steroid abuse can cause sexual, fertility, and health problems.

High consumption of avocado leaves harms male fertility.

5α-reductase-2 deficiency causes ambiguous genitalia at birth and affects male sexual development, but individuals often develop male characteristics at puberty.

Stem cells regenerate tissues and their behavior varies by environment, suggesting the hematopoietic system model may need revision.

Finasteride reduces fertility in male rats.

The testes produce sperm and hormones essential for male development.

DHT deficiency in rats reduces sperm content and affects testis structure over time.

Men who went through puberty later had lower sperm counts and altered hormone levels, possibly affecting fertility.

The combination of cyproterone acetate and testosterone enanthate is highly effective in preventing sperm production and could be a good reversible male contraceptive.

Finasteride doesn't change rat testicle weight or sperm production.

Testosterone boosts fluid and electrolyte secretion in seminal vesicles, aiding sperm function.

Finasteride treatment in male rats can reduce fertility and affect sperm development in their offspring.

A man with testotoxicosis was fertile despite low FSH levels, suggesting high testosterone may allow sperm production without FSH.

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

COVID-19 can harm male fertility by reducing sperm stem cells and damaging testicular function.

Finasteride, at doses of 5mg or higher, may negatively affect male fertility by reducing the expression of certain genes involved in sperm production.

The document explains how sperm cells are produced, the role of testosterone in this process, and how toxins can reduce sperm count and fertility.

Finasteride significantly reduced sperm production and caused testicular atrophy in hamsters.

Mouse skin cells can become sperm-like cells in the lab.

Younger Klinefelter Syndrome patients have a better chance of successful sperm extraction.