Testosterone’s effects on human aggression are likely AR [androgen receptor] dependent.
Study is the first to demonstrate the effects of Facebook use on a physiological measure associated with health outcomes.
Researchers show that cardio training on an exercise bike causes three times as large an increase in the production of the hormone FGF21 than strength training with weights. FGF21 has a lot of positive effects on metabolism. FGF21's potential as a drug against diabetes, obesity and similar metabolic disorders is currently being tested.
Punishing a wrongdoer may be more rewarding to the brain than supporting a victim.
The idea that bone itself can affect other tissues took root only a few years ago with the discovery of osteocalcin. Thanks to this hormone, produced by bone cells, sugar is metabolized more easily. One of osteocalcin’s functions is to increase insulin production, which in turn reduces blood glucose levels. It can also protect us from obesity by increasing energy expenditure.
Findings suggest that the timing of when you consume calories, relative to your own biological timing may be more important for health than the actual time of day.
Study suggests that pair bond formation involves areas of the brain involved in social memory and reward, while maintenance of the bond appears to be based on negative reinforcement, that is, avoiding the pain of separation. The locations of these areas differ between rodent and primate brains, but the underlying neurochemistry seems to involve the same hormones.
The interplay between female ovarian hormones and a circadian "clock" molecule protects the heart health of women as they age, according to a new study.
A new study in the Psychological Science finds that a short-term rise in testosterone – as might occur when in the presence of an attractive potential mate, or during competition – shifts the way men think, encouraging them to rely on quick, intuitive, and generally less accurate, judgements, rather than engaging in careful, more deliberate thought.
scientists have reported that our gut microbes and cells may respond to plant hormones and even produce similar molecules of their own.
The short-wavelength blue light, emitted by the screens we watch, damages the duration, and even more so, the quality of our sleep. This is the conclusion of a new study.
For women who live in already polluted neighborhoods, beauty product chemicals may add to their overall burden of exposures to toxic chemicals. Studies show that beauty and personal care products contain multiple, hidden chemicals that are linked to endocrine, reproductive or development toxicity.
Researchers found that CD38 and CD157 genes that regulate oxytocin, the supreme human social hormone, are associated with the sociality of young individuals. Why some individuals seek social engagement and friendship while others shy away, may well be dependent on the expression and sequence of two genes in their bodies.
Study results show that men tended to behave more aggressively than women, that losers were more aggressive than winners and that teams were more aggressive than individuals.
Chemicals found in everyday plastics materials are linked to cardiovascular disease, type-2 diabetes and high blood pressure in men, according to researchers. Previous studies have shown that men who ate less fresh fruit and vegetables and more processed and packaged foods, and drank carbonated soft drinks, have higher levels of phthalates in their urine.
Aggression is not just about testosterone, it’s about where it acts in the body and the brain. Your baseline level of testosterone isn’t always going to predict how you’re going to behave – it depends on what’s going on in the brain with androgen receptors.
Since the first stock market in Amsterdam in the 17th century, trading floors have been dominated by men. It turns out testosterone may be responsible for some of the dramatic bubbles and crashes we have seen since.
Trace amounts of flame retardants, banned in the U.S. for more than a decade, are still being passed through umbilical cord blood from mothers to their babies. PBDEs, or polybrominated diphenyl ethers, were commonly used flame retardants in building materials, electronics and textiles until they were banned in 2004. The chemicals leach into the environment, where they persist and are found today in virtually every population worldwide.
Study results show there are epigenetic changes in women consuming tea, but not in men. Interestingly, many of these epigenetic changes were found in genes involved in cancer and estrogen metabolism. Previous studies have shown that tea consumption reduces estrogen levels which highlights a potential difference between the biological response to tea in men and women.
Testosterone levels influence whether men become engaged in a committed, monogamous relationship or not. Previous research has shown links between relationship status and testosterone in men, specifically that monogamously – or monoamorously – partnered men have lower testosterone than single men.