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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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

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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.

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