Assessment of intake of caffeine in random population in Riyadh and its levels in some food by HPLC

This study involves 160 Saudi females of a mean age of 23±3.7 years who regularlyconsumed coffee and soft drinks. The highest percentage of participants were reported to consumeless than 300 mg of caffeine daily (42.5%) and the highest level of caffeine consumption (morethan 2800 mg/day) was calculated among 7.5% of the participants. The highest percentages ofparticipants consuming caffeine were detected in coffee consumers followed by soft drinkconsumers (93.75% and 90.63% respectively), while the least percentage was detected in teaconsumers (45.63%). The mean of consumed caffeine from coffee was the highest value(1599±416.7) compared with the caffeine content in other foods. In relation to anthropometricmeasurements, there were no significant correlations between them and the level of caffeineconsumption except weight. There was a significant correlation between the decrease in bodyweight and the increase in amount of caffeine consumed (p