In January 2013, the Qatar Statistics Authority estimated the country's population at 1,903,447, of which 1,405,164 were males and 498,283 females. At the time of the first census, held in 1970, the population was 111,133.
A metallic taste in the mouth can be attributed to many factors, but the most common causes of this are: 1  Excessive Iron levels in the blood.  Side effect of medications (especially ones used to treat high blood pressure, arthritis and anti-depressants)
Bleeding gums is the most common cause of a metal taste. Infection in the mouth and gingivitis, or gum disease, are localised causes but there might be an underlying more general cause, such as pregnancy causing hormonal changes, or an illness such as kidney stones, heart failure, diabetes or cancer. Toxicity from a poison such as lead or mercury is another possibility.