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Studies have been performed on the use of shortwave radiation for cancer therapy and promoting wound healing, with some success. However, at a sufficiently high energy level, shortwave energy can be harmful to human health, potentially causing damage to biological tissues, for example by overheating or inducing electrical currents. [28]
Toxic: a chemical that has a median lethal concentration (LC 50) in air of more than 200 parts per million (ppm) but not more than 2,000 parts per million by volume of gas or vapor, or more than 2 milligrams per liter but not more than 20 milligrams per liter of mist, fume or dust, when administered by continuous inhalation for 1 hour (or less if death occurs within 1 hour) to albino rats ...
Particulates are the most harmful form (other than ultra-fines) of air pollution [22] as they can penetrate deep into the lungs and brain from blood streams, causing health problems such as heart disease, lung disease, and premature death. [23] There is no safe level of particulates. [24] Ultrafine particles are both manufactured and naturally ...
The HPA also says that due to the mobile phone's adaptive power ability, a DECT cordless phone's radiation could actually exceed the radiation of a mobile phone. The HPA explains that while the DECT cordless phone's radiation has an average output power of 10 mW, it is actually in the form of 100 bursts per second of 250 mW, a strength comparable to some mobile phones.
In humans, arsenic can cause cancer in the bladder, skin, lungs and liver. One of the major sources of arsenic exposure in humans is contaminated water, which is a problem in more than 30 countries in the world. Humans tend to encounter arsenic by "natural means, industrial source, or from unintended sources."
A cheeky little slice of cake here, a cookie there, or a nibble of chocolate every once in a while isn't the worst thing in the world. But according to new research, the buck stops at sugary drinks.
Bottled water may not be safer than tap. But many people think it is. In much of the U.S. — and other wealthy nations — tap water is tightly regulated, frequently tested and “often exceeds ...
In the United Kingdom, vaping is considered by some to be around 95% less harmful than tobacco after a controversial landmark review by Public Health England. [2] Despite this, the use of electronic cigarettes carries many health risks. [1] [3] These risks depend on the fluid in these devices and varies according to design and user behavior. [4]