Sun, Oct-14-18, 08:03
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Senior Member
Posts: 15,075
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Plan: mostly milkfat
Stats: 190/152.4/154
BF:
Progress: 104%
Location: Ontario
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There are dangers from excessive potassium. Adele Davis, a nutrition guru from the 30s to 70s, advocated potassium versus colic for infants, to be given in gram amounts. One two month old baby actually died from this.
As far as Dr. Fung goes, he's probably biased versus potassium in part because he's a kidney doctor, excess potassium is a burden on the kidney.
I find I do better if I take in some potassium as half salt. But I also find it doesn't take much. If you look up how they arrived at potassium requirements, it's fairly loopy, I think it's got more to do with keeping requirements high enough that people feel that they'd better eat high potassium fruits and vegetables than anything else. If I don't use half-salt, sometimes I'll get stomach muscle cramps, but only when I'm actually using my stomach muscles.
The World Health Organization on potassium;
Quote:
Food processing reduces the amount
of potassium in many food products, and a diet high in processed foods and low in
fresh fruits and vegetables is often lacking in potassium (22). Data from around the
world suggest that the population average potassium consumption in many countries
is below 70–80mmol/day, the value recommended by the 2002 Joint World Health
Organization/Food and Agriculture Organization of the United Nations (WHO/FAO)
Expert Consultation (8). Few countries report an average consumption of 90 mmol/
day, which is recommended in countries such as Belgium, Mexico, Spain and the United
Kingdom of Great Britain and Northern Ireland (23-26). No countries report an average
population consumption of 120 mmol/day, which is recommended in countries such as
Bulgaria, Canada, the Republic of Korea and the United States of America (USA) (9, 10,
27-29). Women consistently have lower levels of potassium intake than men, but both
groups commonly consume a level that is below current recommendations.
Reduced potassium consumption has been associated with hypertension and
cardiovascular diseases, and appropriate consumption levels could be protective
against these conditions (8). A recent meta-analysis including 11 cohort studies reported
an inverse association between potassium intake and risk of stroke (30). Additionally,
two meta-analyses of trials comparing increased potassium to lower potassium intake
found that increased potassium intake lowers blood pressure (4, 31). These results were
further supported by a systematic review without a meta-analysis, which concluded
that increased potassium intake results in decreased blood pressure in adults (3). Thus,
a public health intervention aimed at increasing potassium intake from food could be a
cost-effective strategy to reduce the burden of NCD morbidity and mortality.
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http://www.who.int/nutrition/public...rintversion.pdf
Blah blah blah fruits and vegetables. Blah blah blah association. I do think there's decent anecdotal evidence for a bit of supplemental potassium on a ketogenic diet (mine, ) but I don't try to get anywhere near the totally made-up recommendation of 4.7 grams a day.
An example of the strength of potassium versus blood pressure;
Quote:
By means of a random-effects model, findings from individual trials were pooled, after results for each trial were weighted by the inverse of its variance. An extreme effect of potassium in lowering blood pressure was noted in 1 trial. After exclusion of this trial, potassium supplementation was associated with a significant reduction in mean (95% confidence interval) systolic and diastolic blood pressure of -3.11 mm Hg (-1.91 to -4.31 mm Hg) and -1.97 mm Hg (-0.52 to -3.42 mm Hg), respectively. Effects of treatment appeared to be enhanced in studies in which participants were concurrently exposed to a high intake of sodium.
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https://www.ncbi.nlm.nih.gov/pubmed/9168293
Pretty weak stuff. By comparison, low carb reduced both numbers for me by about 20 points.
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