Since these salt beds are ancient an dried, they don't have the contamination risk of modern sea salts and contain dozens of other trace minerals. (wellnessmama.com)
CO2 and other trace gases are far too small a proportion of the atmosphere to have any significant effect in comparison to the water vapour effect. (newclimatemodel.com)
There are a number of other trace elements that contribute to thyroid health; zinc and iron are especially worth mentioning. (globalhealingcenter.com)