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Thyroid conditions may make getting pregnant impossible.
Cyanide works by making the human body unable to use oxygen.
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
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