6.1. According to current risk assessment results, are there any health effects from consuming the contaminated tea leaves?
Based on the assessment results conducted on the contaminated tea leaves sample collected by the food surveillance on 28 March 2012, the radiation doses received by average and high consumers due to prolonged consumption (1 year) of the contaminated tea leaves were approximately 0.0009 mSv and 0.0024 mSv respectively. For average consumer, the dosage is equal to the radiation dose received from about 1/50 chest X-ray examination or 1/10 000 CT scan, or 1/100 the radiation dose received from air travel for a round trip from Hong Kong to the West Coast of the United States. For high consumer, the dosage is equal to the radiation dose received from about 1/20 chest X-ray examination or 1/3 333 CT scan, or 1/33 the radiation dose received from air travel for a round trip from Hong Kong the West Coast of the United States. In other words, adverse health effects due to the internal dose from the concerned tea leaves sample alone by both the average and high consumers are unlikely.