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)
Multivitamins and prenatal vitamins with high amounts of heavy metals such as zinc, copper or chromium will cause a bitter taste in mouth. Calcium and iron supplements have the same effect. The taste disappears after the supplements and vitamins are absorbed in your body. The taste might persist if you overdose.