We all need salt. It's an essential mineral that helps maintain electrolyte balance in the body.
Salt maintains fluid balance, nerve transmission and muscle function.
One thing you may notice when restricting carbohydrates (coming from a high carb lifestyle) is that you lose a lot of water. When you experience water loss, you also experience mineral loss, specifically sodium and potassium as they get excreted from the kidneys. This can lead to general feelings of lethargy. It's rather simple to replenish lost sodium stores through making sure to add a high quality mineral salt to your food - pink Himalayan Salt is excellent as are any sea salts. The one salt we generally want to steer away from are iodized salts (like generic table salt, because it is low in quality and lacks minerals).
Salt is the main source of sodium and chloride ions which serve as important electrolytes by regulating blood pH and pressure.
So don't skimp on the salt! Just be mindful of how you're consuming it - salt your whole unprocessed delicious homemade foods liberally, as you like. Replenish sodium after your workouts. But reconsider "salty" processed foods for the sake of replenishing sodium stores...you'll likely tip the scale with unnecessary ingredients.
Worried about blood pressure?
A new study published in the American Journal of Hypertension analyzed data from 8,670 French adults and found that salt consumption wasn't associated with systolic blood pressure in either men or women after controlling for factors like age. ... Eating more fruits and vegetables was significantly linked to a drop.