Quote from nkhoi:
good advice, ex:
Formaldehyde, for instance, is often used as a preservative in Asia and other parts of the world where refrigeration is scarce.
In late 2005, the Indonesian National Agency for Drug and Food Control tested 161 samples of fish, shrimp, squid, tofu, and noodles produced and sold across six cities and found that 64 of the samples tested positive for formaldehyde.
...
Another problem is a group of chemicals called borates, including boric acid. Borates were widely used in food products in the U.S. and other countries a century ago to improve the texture of food as well as preserve it. Most countries today prohibit its use as a food additive because it is toxic at high levels. Now, the chemical is mainly used in insecticides, flame retardants and cleaning products.
The point about the risks in this post and another are not alarmist - unless you are on an expat CEO salary and can buy everything imported you are likely to be exposed to things such as chemicals in/on foods you would not be exposed to in the West. ZThe Japanese in my building have huge bottles of water delivered to their room - this may not be a case of Japanese overpernickityness.
Lead levels in Bangkok air are probably way above what is regarded as safe in US etc etc etc
Another of many under the radar screen 'gotchas' is use of cheap chlorine chemicals in swimming pools that dissolve the enamel off your teeth................................
Education is a major factor - many/most people leave when their children reach school age, as I would, seperate from any decisions about bringing up children with the risks described above.