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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
![Using both hands, gently but firmly grasp the skin over a spot on the upper back, and lift the skin ...](https://biology-forums.com/gallery/32/medium_380798_22_08_17_12_32_33_328371368.jpeg)
![Apply stroking from ankle to knee, using both palms to slide along the calf muscles. If hands will ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_7_05_50_333192419.jpeg)