Zinc Oxide is a compound that may enhance immune function, especially when administered by inhalation.
Scientists are reporting that particle size affects the toxicity of zinc oxide, a material widely used in sunscreens. Particles smaller than 100 nanometers are slightly more toxic to colon cells than conventional zinc oxide. Solid zinc oxide was more toxic than equivalent amounts of soluble zinc, and direct particle to cell contact was required to cause cell death. Their study is in ACS' Chemical Research in Toxicology, a monthly journal.
A tiny new sensor could provide fresh, inexpensive diagnosis and treatment methods for people suffering from a variety of diseases.
Toxic dust: Toxins in coal-tar-based sealcoats in parking lots may be the culprit in contaminated house dust, according to a USGS study. PAHs - or polycyclic aromatic hydrocarbons - are large molecules found in oil, coal and tar deposits, and can have toxic effects.
Everyone expects their bodies to change as they get older. From wrinkles and sagging skin to brittle bones and aches and pains, the aging process is inevitable. In addition, there are a number of medical dermatologic conditions that surface with age that can cause people even more stress. Fortunately, dermatologists can help diagnose and treat these conditions no matter when they strike.
When it comes to vitamin D, consumers are bombarded with mixed messages about the best source for this essential nutrient. While some may argue that small doses of intentional sun exposure are safe, dermatologists point out that the risk of developing skin cancer from ultraviolet (UV) radiation far outweighs the benefit of stimulating vitamin D production - particularly when enriched foods and supplements are safe and effective sources of this vitamin.
A non-toxic and environmentally friendly way to make tiny nanorods of zinc oxide has been developed for the first time by researchers in Saudi Arabia. The approach, described in the current issue of the International Journal of Nanoparticles, could allow the nanorods to be used safely in medical and for other applications.
Whether in the fields of medicine, sustainable energy supply or environmental protection, without making use of nanotechnology we will not be capable of overcoming the challenges which the future presents. In parallel with these efforts, though, it is essential that we examine the new technology very carefully for potential risks, such as those presented by free nanoparticles.
Using aquatic microbes as their "canary-in-a-cage," scientists from Ohio have reported that nanoparticles now being added to cosmetics, sunscreens, and hundreds of other personal care products may be harmful to the environment.
Duke University and United States Army scientists have found that a cheap and nontoxic sunburn and diaper rash preventative can be made to produce brilliant light best suited to the human eye.
Scientists are warning that tiny particles - nanoparticles - are so small that they can be absorbed through the skin.
Scientists are finding that particles that are barely there - tiny objects known as nanoparticles that have found a home in electronics, food containers, sunscreens, and a variety of applications - can breech our most personal protective barrier: The skin.
Cancer-sensing devices built as cheaply and efficiently as wristwatches - using many of the same operating principles - could change the way clinicians detect, treat and monitor cancer in patients.
Many people don't realize there's a difference between sunblock and sunscreen. True to its name, sunblock reflects the sun's rays, thereby blocking them from reaching your skin.
People will now be able to get better protection from the sun with a new sunscreen recently approved by the U.S. Food and Drug Administration (FDA).
The benefits of using sunscreen when heading outdoors are well established - protection from overexposure to the harmful effects of the sun, prevention of prematurely aging skin and defense against future skin cancer.