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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Excessive alcohol use costs the country approximately $235 billion every year.
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.
One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.
![Subcutaneous drug administration: (d) the needle is removed and the puncture site is covered with an](https://biology-forums.com/gallery/47/medium_46687_08_12_14_5_01_53_19533653.jpeg)
![Organization of the Food and Drug Administration showing the seven centers that regulate human and ...](https://biology-forums.com/gallery/28/medium_482573_25_04_17_9_15_15_283451377.jpeg)