PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Illegal use of human growth hormone common among young male weightlifters

2011-01-21
(Press-News.org) A new study published in The American Journal on Addictions reveals that illicit use of HGH (human growth hormone) has become common among young American male weightlifters. Additionally, illicit HGH use in this population is often associated with polysubstance abuse involving both performance-enhancing and classical drugs.

HGH, once an expensive performance-enhancing drug used exclusively by elite athletes, has become cheaply available for illicit users on the street.

Researchers led by Brian P. Brennan, MD, MSc, of McLean Hospital and Harvard Medical School, evaluated 231 male weightlifters in the U.S. aged 18-40 and their reports of drug use.

Results found that 27 (12 percent) reported illicit use of HGH and/or its close relative, insulin-like growth factor-I. All of these 27 men had also used anabolic-androgenic steroids (AAS), and 15 (56 percent) also reported current or past dependence on opioids, cocaine, and/or ecstasy.

These findings suggest that illicit HGH use is common, and is usually associated with abuse of both AAS and ordinary street drugs.

"The long-term risks of high-dose HGH use are little studied, but available evidence suggests that long-term high-dose HGH may have serious medical consequences, including cardiac, endocrine, and respiratory effects, as well as increased risk for certain cancers," Brennan notes. "Our findings suggest that mounting illicit HGH abuse may represent a dangerous new form of drug abuse with potentially severe public health consequences."

INFORMATION:

END



ELSE PRESS RELEASES FROM THIS DATE:

New wave: JILA develops efficient source of terahertz radiation

New wave: JILA develops efficient source of terahertz radiation
2011-01-21
JILA researchers have developed a laser-based source of terahertz radiation that is unusually efficient and less prone to damage than similar systems. The technology might be useful in applications such as detecting trace gases or imaging weapons in security screening. JILA is a joint institute of the National Institute of Standards and Technology (NIST) and the University of Colorado at Boulder. Terahertz radiation—which falls between the radio and optical bands of the electromagnetic spectrum—penetrates materials such as clothing and plastic but can be used to detect ...

Eggs show arctic mercury cycling may be linked to ice cover

Eggs show arctic mercury cycling may be linked to ice cover
2011-01-21
An international research team working with National Institute of Standards and Technology (NIST) scientists at the Hollings Marine Laboratory (HML) in Charleston, S.C., has suggested for the first time that mercury cycling in the flora and fauna of the Arctic may be linked to the amount of ice cover present. Their study* is the latest work reported from the Seabird Tissue Archival and Monitoring Project (STAMP), a multiyear joint effort of NIST, the U.S. Fish and Wildlife Service (USFWS), the U.S. Geological Survey (USGS) and the Bureau of Indian Affairs to track trends ...

NIST advances single photon management for quantum computers

NIST advances single photon management for quantum computers
2011-01-21
The quantum computers of tomorrow might use photons, or particles of light, to move around the data they need to make calculations, but photons are tricky to work with. Two new papers* by researchers working at the National Institute of Standards and Technology (NIST) have brought science closer to creating reliable sources of photons for these long-heralded devices. In principle, quantum computers can perform calculations that are impossible or impractical using conventional computers by taking advantage of the peculiar rules of quantum mechanics. To do this, they need ...

Real-world graphene devices may have a bumpy ride

2011-01-21
Electronics researchers love graphene. A two-dimensional sheet of carbon one atom thick, graphene is like a superhighway for electrons, which rocket through the material with 100 times the mobility they have in silicon. But creating graphene-based devices will be challenging, say researchers at the National Institute of Standards and Technology (NIST), because new measurements show that layering graphene on a substrate transforms its bustling speedway into steep hills and valleys that make it harder for electrons to get around. In a new article in Nature Physics,* NIST ...

Stretching the truth: JILA biophysicists help unravel DNA stretching mystery

2011-01-21
Using a new experimental test structure, biophysicists at JILA have unraveled part of a 15-year mystery in the mechanics of DNA—just how the molecule manages to suddenly extend to almost twice its normal length. The new test structure should support research on DNA elasticity as a standard for tiny forces and help refine studies of how drugs and other substances bind to DNA. In a new paper in the Journal of the American Chemical Society,* JILA scientists disprove a leading explanation for DNA overstretching, a curious behavior in which the molecule's double helix structure ...

Identifying factors in atrazine's reduced weed control

2011-01-21
MADISON, WI, JANUARY 19, 2011 – Invasive broadleaf weeds can destroy corn crops and fallow fields. Farmers use the chemical atrazine in herbicides to protect their plants. Despite atrazine's controversial environmental impacts, it can provide long term residual control of many weed species. However, the loss of atrazine's effectiveness has been a challenge for farmers in northeastern Colorado. In a collaborative study between scientists at the USDA-Agricultural Research Service Water Management Research Unit and Colorado State University, soil samples were collected from ...

NIST puts a new twist on the electron beam

NIST puts a new twist on the electron beam
2011-01-21
Electron microscopes are among the most widely used scientific and medical tools for studying and understanding a wide range of materials, from biological tissue to miniature magnetic devices, at tiny levels of detail. Now, researchers at the National Institute of Standards and Technology (NIST) have found a novel and potentially widely applicable method to expand the capabilities of conventional transmission electron microscopes (TEMs). Passing electrons through a nanometer-scale grating, the scientists imparted the resulting electron waves with so much orbital momentum ...

Study yields better turbine spacing for large wind farms

Study yields better turbine spacing for large wind farms
2011-01-21
Large wind farms are being built around the world as a cleaner way to generate electricity, but operators are still searching for the most efficient way to arrange the massive turbines that turn moving air into power. To help steer wind farm owners in the right direction, Charles Meneveau, a Johns Hopkins fluid mechanics and turbulence expert, working with a colleague in Belgium, has devised a new formula through which the optimal spacing for a large array of turbines can be obtained. "I believe our results are quite robust," said Meneveau, who is the Louis Sardella ...

Are positive emotions good for your health in old age?

2011-01-21
The notion that feeling good may be good for your health is not new, but is it really true? A new article published in Current Directions in Psychological Science, a journal of the Association for Psychological Science, reviews the existing research on how positive emotions can influence health outcomes in later adulthood. "We all age. It is how we age, however, that determines the quality of our lives," said Anthony Ong of Cornell University, author of the review article. The data he reviews suggest that positive emotions may be a powerful antidote to stress, pain, ...

With chemical modification, stable RNA nanoparticles go 3-D

2011-01-21
CINCINNATI—For years, RNA has seemed an elusive tool in nanotechnology research—easily manipulated into a variety of structures, yet susceptible to quick destruction when confronted with a commonly found enzyme. "The enzyme RNase cuts RNA randomly into small pieces, very efficiently and within minutes," explains Peixuan Guo, PhD, Dane and Mary Louise Miller Endowed Chair and professor of biomedical engineering at the University of Cincinnati (UC). "Moreover, RNase is present everywhere, making the preparation of RNA in a lab extremely difficult." But by replacing a ...

LAST 30 PRESS RELEASES:

Why conversation is more like a dance than an exchange of words

With Evo 2, AI can model and design the genetic code for all domains of life

Discovery of why only some early tumors survive could help catch and treat cancer at very earliest stages

Study reveals how gut bacteria and diet can reprogram fat to burn more energy

Mayo Clinic researchers link Parkinson's-related protein to faster Alzheimer's progression in women

Trends in metabolic and bariatric surgery use during the GLP-1 receptor agonist era

Loneliness, anxiety symptoms, depressive symptoms, and suicidal ideation in the all of us dataset

A decision-support system to personalize antidepressant treatment in major depressive disorder

Thunderstorms don’t just appear out of thin air - scientists' key finding to improve forecasting

Automated CT scan analysis could fast-track clinical assessments

New UNC Charlotte study reveals how just three molecules can launch gene-silencing condensates, organizing the epigenome and controlling stem cell differentiation

Oldest known bony fish fossils uncover early vertebrate evolution

High‑performance all‑solid‑state magnesium-air rechargeable battery enabled by metal-free nanoporous graphene

Improving data science education using interest‑matched examples and hands‑on data exercises

Sparkling water helps keep minds sharp during long esports sessions

Drone LiDAR surveys of abandoned roads reveal long-term debris supply driving debris-flow hazards

UGA Bioinformatics doctoral student selected for AIBS and SURA public policy fellowship

Gut microbiome connected with heart disease precursor

Nitrous oxide, a product of fertilizer use, may harm some soil bacteria

FAU lands $4.5M US Air Force T-1A Jayhawk flight simulator

SimTac: A physics-based simulator for vision-based tactile sensing with biomorphic structures

Preparing students to deal with ‘reality shock’ in the workplace

Researchers develop beating, 3D-printed heart model for surgical practice

Black soldier fly larvae show promise for safe organic waste removal

People with COPD commonly misuse medications

How periodontitis-linked bacteria accelerate osteoporosis-like bone loss through the gut

Understanding how cells take up and use isolated ‘powerhouses’ to restore energy function

Ten-point plan to deliver climate education unveiled by experts

Team led by UC San Diego researchers selected for prestigious global cancer prize

Study: Reported crop yield gains from breeding may be overstated

[Press-News.org] Illegal use of human growth hormone common among young male weightlifters