Dioxins have been proven to cause birth defects ...
This is one of those odd things that is widely believed to be true by the public but which has not been proven.
Birth defects have been present in humans and their ancestors since animals first appeared on the planet. The normal rate is about 3%. This is a huge number so it's easy to find people who've had children with birth defects and who have some shared experience. When they meet they conclude that the shared experience must have caused the birth defects but the fact is that birth defects are extremely common.
For the case of dioxin, the relationship to birth defects (in the studies in the US) is supposed to be due to the exposure of US soldiers in Vietnam. In fact, at this time there are *no* chemical that are known to cause birth defects when the father is exposed to it. (There are chemicals which decrease male fertility but that's not a "birth defect." And there are relationships between father's occupation, smoking, etc., and birth defects that have supposedly been shown, but these are not chemicals and the studies have extreme difficulty eliminating the various biases. Smoking dads tend to marry smoking moms, etc.)
Some common chemicals that are known to cause birth defects are alcohol and cocaine. With alcohol, the usual effect is called "fetal alcohol syndrome" and again, it's caused by the *mother* drinking alcohol, not the dad. But if you run a study to see if the father's consumption of alcohol is correlated with birth defects you will easily find that it is. That's because alcoholics tend to stick together. The drinking dads make babies with drinking moms.
Other things that cause birth defects are various viruses, especially some of the nasty venereal diseases (that you expect soldiers to get, and then to pass on to their partners), as well as fairly innocuous things like German measles.
... and very high levels of dioxin were found in the soil at US bases and in the breast milk of women in the surrounding areas.
This is untrue in that the levels of dioxin seen in "soil at US bases" is generally very small compared to the amounts that cause toxicity in animals. Again, if dioxin caused birth defects at the level of say, thalidomide, the relationship would have been proven a long time ago. Instead, if there is any relationship, it's lost in the 3% normal rate of birth defects.
Of course US would never admit to this no matter how many facts you present as that would give way to a lawsuit and the victims would rightfully demand compensation.
People who believe the US is evil also tend to believe that dioxin causes birth defects.
