High salt intake is a hypertensive risk and food does not help
Drinking salty water is less hydrating [may even be dehydrating by producing watery diarrhea and frequent urination] and less of a hypertensive risk than having a salty meal. Food is actively taken into the cell.
In the stomach, active uptake of glucose, peptides and amino-acids into the enterocyte ( cell of the upper small intestine-duodenum and jejunum) by carriers causes this cell to transform and allow sodium to enter the cell through sodium channel. From the cell (enterocyte), the food molecules move into blood by simple diffusion. Water follows passively and then sodium, through osmosis. The rationale for putting glucose in oral rehydration solution is to facilitate the absorption of sodium lost in dehydration from, say, diarrhea. So if you take salty food you are in effect overloading yourself with salt and water and run the risk of developing high blood pressure (hypertension).
In the ilium ( lower small intestine) sodium/proton and chloride/bicarbonate exchangers (pumps) are responsible for sodium absorption. So, the presence of food in the ileum is not necessary for salt absorption.
In the colon, bacteria cause the breakdown of fiber to release small molecules such as acetate. These provide the cellular changes necessary to cause the pull of sodium into the enterocyte and then into blood.
The above tenet holds the rationale for the advocacy of reduced consumption of a salty diet.
Dr. Oliver Verbe Birnso
In the stomach, active uptake of glucose, peptides and amino-acids into the enterocyte ( cell of the upper small intestine-duodenum and jejunum) by carriers causes this cell to transform and allow sodium to enter the cell through sodium channel. From the cell (enterocyte), the food molecules move into blood by simple diffusion. Water follows passively and then sodium, through osmosis. The rationale for putting glucose in oral rehydration solution is to facilitate the absorption of sodium lost in dehydration from, say, diarrhea. So if you take salty food you are in effect overloading yourself with salt and water and run the risk of developing high blood pressure (hypertension).
In the ilium ( lower small intestine) sodium/proton and chloride/bicarbonate exchangers (pumps) are responsible for sodium absorption. So, the presence of food in the ileum is not necessary for salt absorption.
In the colon, bacteria cause the breakdown of fiber to release small molecules such as acetate. These provide the cellular changes necessary to cause the pull of sodium into the enterocyte and then into blood.
The above tenet holds the rationale for the advocacy of reduced consumption of a salty diet.
Dr. Oliver Verbe Birnso
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