Brazil Nuts - nutritional values?

The average shelled Brazil nut contains 12-25 mcg of selenium. (If you are willing to crack the shell yourself, the nut contains 100 mcg!)

The mineral selenium may help protect some women from developing breast cancer, research has suggested.

Selenium has been shown to improve the efficiency with which DNA can repair itself after being exposed to damaging substances. This means your body can fight poisons better when adequate amounts of the mineral are available.

[link to www.mabels.org.uk]

Don't know but they are probably fattening.

What about the barium content of brazil nuts? Is it radioactive or does the body process it?