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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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Cyanide works by making the human body unable to use oxygen.

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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

A typical distillation curve. Heavier molecules evaporate at higher temperatures and contain more ... A typical distillation curve. Heavier molecules evaporate at higher temperatures and contain more ...
Typical exhaust manifold gaskets. Note how they are laminated to allow the exhaust manifold to ... Typical exhaust manifold gaskets. Note how they are laminated to allow the exhaust manifold to ...
A typical J2534 universal reprogrammer that uses the J2534 standards. A typical J2534 universal reprogrammer that uses the J2534 standards.
Typical Night’s Sleep for a Young Adult Typical Night’s Sleep for a Young Adult
Early growth of corn (Zea mays), a typical monocot. Early growth of corn (Zea mays), a typical monocot.
Typical features of expression vectors for E. coli Typical features of expression vectors for E. coli
Video: Requirements for nervous signals

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