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alkalinity myth
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jc3737 posted:
While it is just a myth you hear the plant based doctors mention it all the time.

Dolores,I got this from a friend of mine who is an expert in this area:

"The body RARELY ever goes acidic. The acidity causing disease claims is really a myth. The body cannot survive if it becomes too acidic, or too alkaline. In fact a pH higher than 7.8 or lower than 6.8 will kill a person. This is why the body has so many redundant systems to maintain its narrow pH it can survive in. For example, breathing adjusts pH. If the body starts to get acidic our respiration increases to blow off CO2, which reduces carbonic acid, and the oxygen reduces acidic lactate. If the body starts to become too alkaline the respiration slows down to retain CO2, increasing carbonic acid. The body also generates bicarbonate to deal with acidity, can excrete hydrogen ions, carbonic acid or bicarbonate out through the urine or retain them to adjust pH. The body also uses phosphates and hemoglobin as buffers, and in severe cases can pull minerals from the bones as a buffer against acidity. Our pH is also regulated by proteins that can either bond or release hydrogen ions in response to pH imbalances. Here are some references for you:



http://dwb4.unl.edu/Chem/CHEM869R/CHEM869RLinks/www.usyd.edu.au/su/anaes/lectures/acidbase_mjb/control.html


http://www.chemistry.wustl.edu/~edudev/LabTutorials/Buffer/Buffer.html


This is why we rarely see acidosis (overly acidic blood) or alkalosis (overly alkaline blood). Acute acidosis can occur with severe vomiting and diarrhea, ketoacidosis, inadequate oxygen intake or utilization (respiratory acidosis), rhabdomyolosis, kidney failure and by poisoning with certain chemicals. Acute alkalosis can occur with over consumption of hydroxides including alkaline waters, consumption of milk with hydroxides, overuse of carbonates such as antacids or baking soda, prolonged vomiting, excessive aldosterone secretion, diuretic use and hyperventilation.


The pH of the lymphatic system is kept slightly more alkaline than the blood, so lymphatic acidosis does not occur.


Because chronic acidosis is so rare and diseases are so common even common sense should tell us that acidosis is not a cause of most diseases. Most often it is a byproduct of a disease, not a cause. So anyone who is going to claim that acidity is the cause of most or all diseases does not have a clue what they are talking about.


In fact we need a large number of acids to survive and thrive. These include hydrochloric acid, pyruvic acid, acetic acid, carbonic acid, hyaluronic acid, glucuronic acid, malic acid, lactic acid, citric acid, uric acid, fatty acids, amino acids, ascorbic acid, pantothenic acid, folic acid, etc.
And most pathogens are killed by acids and thrive in an alkaline environment. This is why the parts of the body that help protect us from pathogens are normally acidic. These include the skin, stomach, intestines and sinuses
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max9821 responded:
I vaguely remember a discussion about acidity and alkalinity and saying that the reference to these was not in eating things like acidic foods or basic foods but what happened after digestion. However, it seems to me that from the articles you cited the kidneys play a major role in maintaining the correct pH. So it seems logical to assume that anything that damages the kidneys or renders them less efficient would affect the pH. Doesn't a high animal protein and high salt diet affect the function of the kidneys while a plant diet lower in salt maintains good kidney function? Aren't low protein and salt diets what is recommended for kidney patients? So even if indirectly a diet of plants, lower in protein and salt, would have an affect on pH.

What about a ketogenic diet? I thought I read this produces acidosis but advocates say this is not to be confused with the ketoacidosis of diabetes.

dolores
 
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jc3737 replied to max9821's response:
Let me be clear about what I'm getting at...I don't think a high fat diet is healthy especially for me and a high protein diet is probably not healthy for anyone.

Im trying to make it clear that the plant based doctors are given to great exaggeration....they try to say every aspect of the diet is healthy in every way and often stray into the land of make believe to try and prove ther diet is healthy.... and they ignore problems many have with the diet.

Some people have digestive problems on the plant based diet and some do not.Some see improvement when changing from the SAD but not too many show improvement when they move from a high fat diet.That is one area where the high fat diet comes out ahead....for those with digestive problems...GERD.

Thats not to say its a better diet,because lower blood glucose and blood pressure are worth working around what carbs cause GERD.i saty on the McDougall/Fihrman diet for that reason.

But I would like to see more honesty in addressing problems with the diet and for those devotees to quit acting like religious fanatics and rememeber the Popper method.
 
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jc3737 replied to jc3737's response:
From another forum:

"

I keep reading from some health advocates that fungi, bacteria, and parasites cannot survive in an alkaline environment; hence, the need to alkalize the body and eat alkaline foods. What's up with this alkaline hype?Part of is that it promotes sales for those selling alkaline products like alkaline water machines. Then there are those that believe and repeat without bothering to check facts. The fact is that most pathogens cannot survive and thrive in an acidic environment.. But they do survive and thrive in an alkaline environment. Candida is a great example. Alkalinity turns on the growth gene and causes it to go in to its highly aggressive and pathogenic fungal form. In an acidic environment the growth gene is turned off and the Candida is kept in a relatively harmless yeast form."


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