Of course, radon is in the natural outdoor air as well, but it is diluted by all the air that is available. The Environmental Protection Agency (EPA) did a national survey in the United States and determine that the average indoor air concentration ( picocuries of radon per liter of air) is about three times higher than the average outdoor air concentration ( picocuries per liter). The average indoor air concentration is three times less than the recommended limit ( picocuries per liter). Even though, on average, we could expect our house to have about picocuries per liter of radon, the EPA estimates that nearly 1 out of every 15 homes in the United States has elevated radon levels.
Scombroid poisoning: This occurs as a result of inadequate storage conditions and temperature control of fish. It occurs when fish is not preserved by chilling on ice during transportation. Histamine accumulates in the fish and is responsible for the poisoning. Some of the susceptible fish include mackerel , herring , sardine , yellow fin tuna etc. Symptoms of scombroid poisoning begin quickly, often 30 min to 1 hour after consuming the toxin, and include nausea , vomiting , diarrhea , abdominal cramps , burning and tingling of the lips and mouth , dizziness , flushing , urticaria , sweating , headaches , blurred vision and palpitations . In severe cases, breathing difficulties can occur, especially in asthmatics.
The current quantitative and qualitative standards for vitamins and other essential nutrients, such as those listed by RDA’s, RDI’s, and DV’s for understanding nutrient activity, label disclosure and other nutrient details related to food supplements and fortified foods are originally based upon synthetic quantities mostly developed upon animal research studies conducted over 60 years ago. There is no qualitative or quantitative standard currently available for understanding non-synthetic, naturally occurring vitamins and nutrients potencies for the purpose of labeling or publication as related to our fortified foods and dietary supplements. This situation is confusing in general not only for natural food supplement and food product developers, but also for consumers who should be informed about the distinction that exists between naturally occurring vitamins and nutrients obtained only and directly from food and botanical sources created by nature as opposed to man-made synthetic vitamins and nutrients produced in laboratories. Therefore, a new standard, the NOS, is being developed as related to naturally occurring vitamins and nutrients.