uchihaMadara
Whatever caking agents in salt used, I can always taste them. The salt tastes gross and pungent to my buds with additives.
It's not the salt that causes problems usually, but organs that are damaged due to various reasons. Example: Blood vessels unable to relax and expand their diameter or open up enough due to damage to vessel walls or unresponsive to hormonal signals. Damage could be from immune system stimulation due to infection, but this is getting speculative.
I think the favorite anti-caking agent is sodium aluminosilicate in most salt and products that have any salt in them that are mad-made or pre-made in stores. Once sodium dissociates from the alumino-silicate, I can't imagine aluminum ions or their derivatives having any good effects in the body. And if not excreted by the kidneys, bowels, or other means, then it is a cumulative poison that will show itself slowly, but eventually.