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Nathan Goodyear

Prospective longitudinal study of testosterone and incident depression in older men: Th... - 0 views

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    low Total Testosterone is associated with depression in oder men.
thelori96

OnlineAskBlog - 0 views

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    Health, Fitness, Diet, Lifestyle, Workout, Skin Care, Foods, Recipes, Culture, Yoga, Bodybuilding
Nathan Goodyear

Testosterone and Cardiovascular Disease - 0 views

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    good review article of the growing body of evidence supporting low Testosterone and CVD.
lina001

Daily Healthy Life Style - - 0 views

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    Best Health Tips and guideline for men and women....
trungtamnamkhoa

Phương pháp điều trị xuất tinh sớm hiệu quả nhất - Men's Health Vietnam - 1 views

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    Premature ejaculation is a male sexual disorder characterized by ejaculation that occurs always (or almost always) before or within a minute after putting the penis into the vagina, unable to control ejaculation every time. put penis into vagina. And this condition causes negative consequences for yourself such as depression, frustration, sexual intercourse.
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Adderall is a drug which is composed of two closely related components - amphetamine and dextroamphetamine. The drug mainly contains amphetamine in the percentage of 25% and dextroamphetamine in th...

health Disease hormones hormone cancer Testosterone Men inflammation obesity low Male

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Nathan Goodyear

Testosterone therapy in hypogonadal men and potential prostate cancer risk: a systemati... - 0 views

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    meta-analysis finds no evidence of testosterone therapy and increased risk of prostate cancer.
trungtamnamkhoa

Penis enlargement due to where? Cause And Treatment - 1 views

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    The body of the white pimples is a common feature of boys entering puberty. Understanding their nature will help you no longer worry. White pimples on the penis and pores, squeezing out with a white core. Do these acne affect fertility? This top concern in many young people will be answered right after.
trungtamnamkhoa

Foreskin Sign Of What Disease? Treatment - 0 views

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    Causes of itching For men, the cause of the itch can be divided into three groups: * The "little boy" hygiene is not right: Men - especially young people - often do not focus or "lazy" to clean the boy. This bad habit has gradually created an environment for the growth of genital fungi, causing an itching sensation. Besides, the selection of inappropriate cleaning solutions is also the reason that may be encountered in men. Some men reported using feminine cleaning solutions or shower gels to "bath" their "boy". This makes the itching condition more and more because the nature of the feminine hygiene solution is not suitable for his small skin, so it can easily lead to skin irritation, even leading to a disorder of the skin and creating favorable conditions for mushroom growth.
trungtamnamkhoa

Pimples In The Penis - What Is The Cause? - 1 views

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    The penis gets pimples, white or red items make men worried because they don't know the cause. In most of the causes of penile acne, the group of causes of sexually transmitted diseases is the most dangerous. Genital skin is very sensitive, especially in the penis. Only a small change can cause abnormal symptoms such as tumors, irritation, irritation and discomfort. Men need to understand the reasons for effective prevention and treatment. Group of allergy causes: Men with acne in the penis due to local allergies, for example, the penis skin has been exposed to "strange" substances from poor quality condoms. In addition, wearing underwear that is too tight, fabric material is not guaranteed or new clothes bought without washing well and many dust and dirt also cause irritation and penile pimples. Eating allergenic foods can also irritate the skin and, if unfortunately, the skin is as delicate as the "genital area".
Nathan Goodyear

A Validated Age-Related Normative Model for Male Total Testosterone Shows Increasing Va... - 0 views

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    Interesting read: study finds peak Testosterone at age 19 in men; Testosterone decline was see up to age 40 at which decline was variable beyond age 40
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Nathan Goodyear

A Perspective on Middle-Aged and Older Men With Functional Hypogonadism: Focus on Holis... - 0 views

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    literature review finds that lifestyle interventions can improve Testosterone levels in men.  For many men, low Testosterone, is the result not the cause.
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Nathan Goodyear

Ibuprofen alters human testicular physiology to produce a state of compensated hypogona... - 0 views

  • The levels of LH in the ibuprofen group had increased by 23% after 14 d of administration
  • This increase was even more pronounced at 44 d, at 33%
  • We found an 18% decrease (P = 0.056) in the ibuprofen group compared with the placebo group after 14 d (Fig. 1A) and a 23% decrease (P = 0.02) after 44 d (Fig. 1C). Taken together, these in vivo data suggest that ibuprofen induced a state of compensated hypogonadism during the trial, which occurred as early as 14 d and was maintained until the end of the trial at 44 d
  • ...27 more annotations...
  • We first investigated testosterone production after 24 and 48 h of ibuprofen exposure to assess its effects on Leydig cell steroidogenesis. Inhibition of testosterone levels was significant and dose-dependent (β = −0.405, P = 0.01 at 24 h and β = −0.664, P < 0.0001 at 48 h) (Fig. 2A) and was augmented over time
  • The AMH data show that the hypogonadism affected not only Leydig cells but also Sertoli cells and also occurred as early as 14 d of administration
  • Sertoli cell activity showed that AMH levels decreased significantly with ibuprofen administration, by 9% (P = 0.02) after 14 d (Fig. 1B) and by 7% (P = 0.05) after 44 d compared with the placebo group
  • Examination of the effect of ibuprofen exposure on both the ∆4 and ∆5 steroid pathways (Fig. 2B) showed that it generally inhibited all steroids from pregnenolone down to testosterone and 17β-estradiol; the production of each steroid measured decreased at doses of 10−5–10−4 M. Under control conditions, production of androstenediol and dehydroepiandrosterone (DHEA) was below the limit of detection except in one experiment with DHEA
  • Measuring the mRNA expression of genes involved in steroidogenesis in vitro showed that ibuprofen had a profound inhibitory effect on the expression of these genes (Fig. 3 B–D), consistent with that seen above in our ex vivo organ model. Taken together, these data examining effects on the endocrine cells confirm that ibuprofen-induced changes in the transcriptional machinery were the likely reason for the inhibition of steroidogenesis.
  • Suppression of gene expression concerned the initial conversion of cholesterol to the final testosterone synthesis. Hence, expression of genes involved in cholesterol transport to the Leydig cell mitochondria was impaired
  • A previous study reported androsterone levels decreased by 63% among men receiving 400 mg of ibuprofen every 6 h for 4 wk
  • We next examined the gene expression involved in testicular steroidogenesis ex vivo and found that levels of expression of every gene that we studied except CYP19A1 decreased after exposure for 48 h compared with controls
  • the changes in gene expression indicate that the transcriptional machinery behind the endocrine action of Leydig cells was most likely impaired by ibuprofen exposure.
  • Together, these data show that ibuprofen also directly impairs Sertoli cell function ex vivo by inhibiting transcription
  • ibuprofen use in men led to (i) elevation of LH; (ii) a decreased testosterone/LH ratio and, to a lesser degree, a decreased inhibin B/FSH ratio; and (iii) a reduction in the levels of the Sertoli cell hormone AMH
  • The decrease in the free testosterone/LH ratio resulted primarily from the increased LH levels, revealing that testicular responsiveness to gonadotropins likely declined during the ibuprofen exposure. Our data from the ex vivo experiments support this notion, indicating that the observed elevation in LH resulted from ibuprofen’s direct antiandrogenic action
  • AMH levels were consistently suppressed by ibuprofen both in vivo and ex vivo, indicating that this hormone is uncoupled from gonadotropins in adult men. The ibuprofen suppression of AMH further demonstrated that the analgesic targeted not only the Leydig cells but also the Sertoli cells, a feature encountered not only in the human adult testis but also in the fetal testis
  • ibuprofen displayed broad transcription-repression abilities involving steroidogenesis, peptide hormones, and prostaglandin synthesis
  • a chemical compound, through its effects on the signaling compounds, can result in changes in the testis at gene level, resulting in perturbations at higher physiological levels in the adult human
  • The analgesics acetaminophen/paracetamol and ibuprofen have previously been shown to inhibit the postexercise response in muscles by repressing transcription
  • Previous ex vivo studies on adult testis have indeed pointed to an antiandrogenicity, only on Leydig cells, of phthalates (41), aspirin, indomethacin (42), and bisphenol A (BPA) and its analogs
  • ibuprofen’s effects were not restricted to Leydig and Sertoli cells, as data showed that the expression of genes in peritubular cells was also affected
  • short-term exposure
  • In the clinical setting, compromised Leydig cell function resulting in increased insensitivity to LH is defined as compensated hypogonadism (4), an entity associated with all-cause mortality
  • compensated hypogonadic men present with an increased likelihood of reproductive, cognitive, and physical symptoms
  • an inverse relationship was recently reported between endurance exercise training and male sexual libido
  • AMH concentrations are lower in seminal plasma from patients with azoospermia than from men with normal sperm levels
  • inhibin B is a key clinical marker of reproductive health (32). The function of AMH, also secreted by Sertoli cells, and its regulation through FSH remain unclear in men
  • the striking dual effect of ibuprofen observed here on both Leydig and Sertoli cells makes this NSAID the chemical compound, of all the chemical classes considered, with the broadest endocrine-disturbing properties identified so far in men.
  • after administration of 600 mg of ibuprofen to healthy volunteers
  • 14 d or at the last day of administration at 44 d
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    ibuprofen alters genetic expression that results in decreased Testosterone production.
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