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)
This type of taste in the mouth is sometimes the result of heavy metal toxicity. Particularly, mercury from silver amalgam fillings in the teeth, but it could be some other source of metal like lead, copper etc. New pipes in the house, an unknown source of lead etc., eating fish or food out of the can. Cookware.