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Tag: "testosterone" at medical news

Gene linked to early puberty in girls

...ters.The gene called CYP1B1, acts by breaking down testosterone in the body of these girls and this starts off a cascade of hormones, which result in breast development.The scientists are now studying the effects of this gene on puberty in boys. Using the same yardstick they reason out that those with CYP1B1 gene...

New treatment for Osteoporosis

... This was done by discovering that oestrogen and testosterone can trigger more than one kind of signal in cells. It was known that when oestrogen binds to receptors in cells, it activates a signal that changes the gene expression. The team found that in bone cells, oestrogen can also trigger a signal preventing...

Low testosterone levels lead to eating disorders

The researchers suspect low testosterone levels in men suffering from eating disorders. Men who suffer from eating disorders can be affected more than women with the same problems, researchers say.// Eating disorders are associated with a weakening of the bones, which become dangerously ...

Memory problem? solve a crossword

...r trust in unproven cures such as melatonin, DHEA, testosterone and human growth hormone. These drugs and supplements may have long-term adverse effects.// Other strategies to keep the mind functioning, say experts, include lifelong learning and memory training, physical activity, meaningful work and social act...

Male contraceptive in trial

...of progesterone, then a pellet of the male hormone testosterone is placed under the skin in the abdomen.Study coordinator Professor David Chater from the Royal Kings Hospital in UK says the technique works by putting the testes to rest, while ensuring the male libido and male characteristics remain intact.// Pro...

The tall gene

...P19, codes for aromatase - an enzyme that converts testosterone into oestrogen in both sexes. Oestrogen influences height because it is responsible for bones fusing over at the ends, which stops people growing. A person's height depends on both genetic and environmental influences. Previous studies have identif...

Decrease in testosterone levels lead to Alzheimer's

Suppression of testosterone levels in men with testicular cancer may inadverte...arolina University has found that when circulating testosterone levels go down, a high rise in levels of amyloid – the protein implicated in Alzheimer’s disease – o...

The phenomenon of sexual attraction

...e when they were exposed to the pheromones and the testosterone in their saliva increased. There were also fewer differences in perceptions about attractiveness between the men when they were under the influence of the chemical messengers. Professor Grammer said: "The most amazing thing is that the attractive w...

Lengthy Fingers could predict heart attacks

...t are indirectly responsible for the production of testosterone and the female hormone oestrogen also control the development of the fingers....

Cure for osteoporosis in prostate cancer patients

...or started on androgen deprivation therapy. Serum testosterone and oestradiol, along with urinary collagen type I cross-linked N-telopeptides, were analysed at follow-up. Three separate morning urine samples on three separate months were collected from each patient and analysed for N-telopeptides. Patients on ...

Breast cancer risk doubles by high sex hormone levels

...latively high serum concentrations of estrogen and testosterone have about twice the risk of developing breast cancer as women// with relatively low serum concentrations of these sex hormones. Associations between serum sex hormone levels and risk of developing breast cancer were not different in women who donate...

Genetic innovation

...P19, codes for aromatase - an enzyme that converts testosterone into oestrogen in both sexes. Oestrogen influences height because it is responsible for bones fusing over at the ends, which stops people growing. A person's height depends on both genetic and environmental influences. Previous studies have identif...

High Altitude ‘Speeds up ageing process

...er normal circumstances, including DHEA and DHEAS, testosterone in men and growth hormones in both sexes. “Maybe the decline in one of these three hormone levels is key to the ageing process and maybe if you reverse it, you might reverse the ageing process.” ...

Hormone replacement therapy improves sexual function

...ent. They think that the patch works by increasing testosterone levels - and low testosterone is sometimes a cause of sexual difficulties. The oral form of HRT is not known to have the same effe...

Reasons why men die earlier

... make men more prone to infections? Owens believes testosterone may play a key role. The male hormone is well-recognized as an immunosuppressant, and studies have shown men who are castrated (and thus no longer produce testosterone) live about 15 years longer than men who are not castrated. Testosterone may suppr...

Boys demand more than girls, even before birth

...a higher energy requirement, which could be due to testosterone secreted by the foetal testicles. But although they produce bigger babies, mothers of boys do not put on more weight than other women during pregnancy because the gender of the baby had no effect on maternal weight. These data suggest that in utero b...

How a man's mind really works

... worked up about housework. Male hormones such as testosterone and vasopressin set the male brain up to seek competitive, hierarchical groups in its constant quest to prove self-worth and identity. That is why men, paradoxically (from a hormonally altered new mother's point of view), become even more workaholic ...

Genetic differences found between Male and Female brains

...born. These findings negate long-held beliefs that testosterone and estrogen were responsible for sexually organizing the brain. It was thought that more testosterone production was all it took for a person to be "male." In this study, researchers performed two diff...

Prostate Cancer in Obese Men

...h in obese men. Also, obese men usually have lower testosterone levels and higher estrogen levels, which may promote cancer growth. In addition, diets high in fat may promote tumor growth. Medical peers agree with the conclusions of the studies and encourage further investigation. Alfred I. Neugut, M.D., Ph. D.,...

Testosterone Replacement Therapy Safe If Monitored Appropriately

...terone replacement therapy is designed to increase testosterone levels for men with the condition. The therapy may...jection, patch, gel, or tablet. New research shows testosterone replacement therapy does not increase a man’s risk of developing prostate cancer or heart disease. H...

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