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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.
Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.
Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.
![Skin color is a polygenic trait controlled by three or four genes, producing a wide range of phenoty](https://biology-forums.com/gallery/44/medium_1099382_26_01_22_1_16_53_44169785.jpeg)
![Distribution of skin color as measured by a reflectometer at a wavelength of 685 nm. The results are](https://biology-forums.com/gallery/44/medium_1099382_26_01_22_1_24_35_441901615.jpeg)