Tag: hormones
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Nation & World
Exercise, fasting help cells shed defective proteins
A new study from the Blavatnik Institute finds that intense exercise and fasting activate hormones that boost cells’ capacity to dispose of defective proteins, which clog up the cell, interfere with its functions, and, over time, precipitate diseases including neurodegenerative conditions such as ALS and Alzheimer’s.
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Nation & World
Estrogen and female anxiety
Some women’s vulnerability to anxiety and mood disorders may be explained by their estrogen levels, according to new research by Harvard and Emory University neuroscientists.
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Nation & World
Study links steroid abuse to key biological, psychological characteristics
A study by researchers at Harvard-affiliated McLean Hospital sheds new light on anabolic steroid users, augmenting previous research suggesting that users can become dependent on the drugs and showing for…
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Nation & World
Hormones in milk can be dangerous
Ganmaa Davaasambuu is a physician (Mongolia), a Ph.D. in environmental health (Japan), a fellow (Radcliffe Institute for Advanced Study), and a working scientist (Harvard School of Public Health). On Monday…
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Nation & World
Molecular middleman puts thyroid hormone in developmental signaling pathway
Tissues such as muscle and brain convert the inactive form of thyroid hormone, T4, into T3, the active form of thyroid hormone, when necessary. In the 1980s, researchers discovered that…
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Nation & World
Studies chip away at sex hormone roles in prostate and breast cancers
In recent work, Myles Brown and colleagues combined chromatin immunoprecipitation (ChiP) assays with measures of DNA structure and large-scale gene chip analyses to study where, when, and how androgen and…
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Nation & World
Appetite hormone restores fertility
A hormone called leptin has been trumpeted as an appetite suppressor and a possible treatment for obesity. New research shows that “a clear connection also exists between fat, or energy…
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Nation & World
Study finds no direct links between testosterone therapy, diseases
A comprehensive review of 72 studies addresses the current controversy about testosterone replacement therapy and its potential health risks to men. “We reviewed decades of research and found no compelling…
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Nation & World
Leptin serves body as energy signal
Much leptin research in humans has focused on feasting rather than famine, but Christos Mantzoros’s team, led by Jean Chan, a Harvard Medical School clinical fellow in medicine, took a…
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Nation & World
Testosterone drives away the blues
In the 1940s, experiments showed that major depression can be relieved by injecting testosterone into men with low levels of that hormone. The treatment never caught on because the shots…
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Nation & World
Hormone replacement therapy may lower degenerative eye disease risk in postmenopausal women
ARM is a degenerative eye disease that affects the macula, which is responsible for central vision, which is necessary for reading, driving and recognizing people’s faces. Advanced ARM is the…
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Nation & World
Hormone receptor variation linked to cancer risk
Endometrial cancer is the fourth most common cancer in women in this country, according to National Cancer Institute statistics. Progesterone’s important protective role showed up three decades ago, articulated in…
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Nation & World
Studies find milk consumption, use of HRT, and pregnancy may influence hormone levels associated with cancer risk in women
IGF-1 is a hormone important to the growth and function of many organs. Higher levels of IGF-1 have been associated independently with an increased risk of a number of cancers,…
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Nation & World
Women’s menstrual cycle holds clue to cocaine response
During the first half of their menstrual cycles, when their estrogen levels are high, women are protected from the brain-damaging effects of cocaine use, according to a research study conducted…