Low Salt Increases Mortality Risk in Many

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I recently sat down with Dr. John Glidea, who is an expert in kidneys and salt.  Here is an excerpt of that conversation:

“A proper electrolyte concentration is central to our health.  The biggest issue with absorbing electrolytes is that you need your stomach to be acidic.  Generally, the older you get, the more difficulty you have with electrolyte absorption. One of the reasons for this is that as you age, you do not absorb as much salt.  You need salt for all sorts of things, but one very important thing is that adequate salt provides the ability for you to acidify your stomach.

A plague seen in the elderly with GERD (gastro-esophageal reflux disease) and acid reflux and other stomach problems is a result of not making enough acid while you are eating.  Because of this, the upper sphincter to your stomach doesn’t close completely.  So, the acid that you do produce leaks upward into your esophagus and causes damage. 

So, you want your stomach acid to be high during and after you eat, which happens naturally as you’re younger but that goes away as you get older.  You need acid to absorb minerals.  You also need acid to produce gastric intrinsic factor, a glycoprotein secreted in the stomach that is necessary for methyl B12 to be absorbed later in the small intestine.  Methyl B12 is vital to your metabolism.

The whole world is telling you to eat less salt. But you have a salt thermostat in your brain that is very hard to override.  As you age, you’re losing more and more salt.  Because of this, it is likely that if you have GERD or acid reflux and are older, you are low in salt.

And having low salt has consequences, as seen in a publication where people were actually hospitalized with low salt.  After given a saline IV and stabilized, these people were released.  If they returned a second time for low salt, their chance of mortality increased 273%.

The neuro endocrine system in your stomach is very important.  It needs to be dynamic just like every other system in your body.  So, taking medications that change the dynamics of this system can be problematic.  You want high stomach acid concentration during meals and low stomach acid concentration in between meals.

And this is why you should not drink water or liquids during meals as well.  Water dilutes the high acid levels that your stomach is trying to maintain.  Additionally, if you have high stomach acid in between meals, drinking a glass of water has been shown to be the same as taking a Tums.”

"The FDA currently recommends talking less than 2.3 grams of salt per day, but current research points to 8.5 grams of salt for most people being the best amount."  

Stay tuned for our next conversation with John, when he discusses the three different groups of people and how they differ in the amounts of salt they need. 

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