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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

The progression and effects of cancer. The progression and effects of cancer.
Amazing NASA Pictures Collection Amazing NASA Pictures Collection
Amazing NASA Pictures Collection Amazing NASA Pictures Collection
Amazing NASA Pictures Collection Amazing NASA Pictures Collection
The effects of aging can be seen in the decline in function of many physiological systems. The effects of aging can be seen in the decline in function of many physiological systems.
The inverse-square law and its effects. Doubling your distance away from a radioactive material ... The inverse-square law and its effects. Doubling your distance away from a radioactive material ...
Video: Global warming and its effect on climate change

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