You have to look up the chemical formula of the DNA. Then you'll be absolutely positive that salt is not a part of DNA.
See for yourself - here is an illustration - all four bases of DNA are listed there and their chemical elements.
Notice the elements C, H, N, O (and the phosphorus bonds between the aminoacids.)
Salt is not a chemical element. The formula of table salt is NaCl. That's what salt is. Natrium and Chloride, dude.
Here is the spectral analysis of Himalayan salt.
The main ingredient is Chloride, 590.93 g/kg. The second one is Natrium, 382.61 g/kg.
Note that it contains some P (phosphorus) at <0.10 parts per million. Carbon, <0.001 ppm. Nitrogen, 0.024 ppm. Not much, really. (And it also contains lead, at the same concentration of <0.10 parts per million as well! and traces of cadmium, arsenic,and mercury.)
Water is H2O, at least those elements are the same as in the DNA. But if someone tried to sell me water "Ooohh, buy this expensive water, from the Himalayan streams, because it's part of your DNA", I'd just laugh at them.
Salt is part of our body that is NOT DNA. So if some scammers try to advertise their salt as "essential part of DNA", you should be able to see that it is a scammy claim.
If they just said "Hey, it's a nice salt, tastes fine, is visually pleasing with that 'back to Mother Earth' vibe to it, it's from an exotic locale that brings up images of pristine mountains and simpler cultures with natural values. Pay us some extra money for the illusion of purity and harmony with nature, and try it in your lentil stew!" - I would not have a problem with that. The DNA connection is bunk.
(It is a nice salt, I'd use it, it's just when I hear that it is necessary for loving nourishment of our DNA, then it's funny.)
Edited by DoubleDouble - 2/8/12 at 5:32am