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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.