Potatis och högt blodtryck

[King Grub]

Objective

To determine whether higher intake of baked or boiled potatoes, French fries, or potato chips is associated with incidence of hypertension.

Design

Prospective longitudinal cohort studies.

Setting

Healthcare providers in the United States.

Participants

62 175 women in Nurses’ Health Study, 88 475 women in Nurses’ Health Study II, and 36 803 men in Health Professionals Follow-up Study who were non-hypertensive at baseline.

Main outcome measure

Incident cases of hypertension (self reported diagnosis by healthcare provider).

Results

Compared with consumption of less than one serving a month, the random effects pooled hazard ratios for four or more servings a week were 1.11 (95% confidence interval 0.96 to 1.28; P for trend=0.05) for baked, boiled, or mashed potatoes, 1.17 (1.07 to 1.27; P for trend=0.001) for French fries, and 0.97 (0.87 to 1.08; P for trend=0.98) for potato chips. In substitution analyses, replacing one serving a day of baked, boiled, or mashed potatoes with one serving a day of non-starchy vegetables was associated with decreased risk of hypertension (hazard ratio 0.93, 0.89 to 0.96).

Conclusion

Higher intake of baked, boiled, or mashed potatoes and French fries was independently and prospectively associated with an increased risk of developing hypertension in three large cohorts of adult men and women.


Potato intake and incidence of hypertension: results from three prospective US cohort studies. British Medical Journal, 17 May 2016.

http://www.bmj.com/content/353/bmj.i2351

http://i.imgur.com/qOD5CPd.gif

[JacobHeitmann]

:D

Fourthly, as with any observational study, our findings could be explained by residual confounding; for example, potatoes are often consumed with salt and added fat (such as butter or margarine). The increased sodium content could explain the association of boiled/baked potatoes with hypertension. However, our results did not materially change after we adjusted for intake of sodium or trans and saturated fat.

http://vignette3.wikia.nocookie.net/victorious/images/9/94/Potato_gif.gif/revision/latest?cb=20130124235308

[upperkatt]

https://66.media.tumblr.com/176cea88d8234d47cee6a4eee2d1fb0a/tumblr_mwktyc1Xxb1qbtocuo1_250.gif

[JacobHeitmann]

Lot of people have been asking me about the study that potatoes cause hypertension.

The study looked at the Nurses health and the Health Professions database. They found that boiled potatoes, mashed potatoes, and french fries BUT NOT CHIPS were associated with increase blood pressure.

The database is a reliable database that has been followed for many years. It has its flaws but is nonetheless a good database and the authors are all respected and funded by NIH.

Now, in order to decide whether there was a difference between eating potatoes and not eating potatoes there has to be a control. In other words, potatoes are more likely to cause hypertension compared to what?

In this situation they were comparing people who ate potatoes(in the various forms) vs non starchy vegetables. Well, this seems obvious to me. As I write about in my book, non starchy vegetables are high in glutamic acid which is converted to glutathione which will aid vasodilation which will actually decrease BP. More veggies will always improve health.

I think the authors struggle in this article coming up with a mechanism of action. They claim that the high glycemic index results in the high blood pressure but there is no pathophysiologic mechanism for this unless you start looking at indirect effects that should have been controlled for.
They also have a hard time explaining why potato chips had no effect. They say that it may me a confounder like BMI, though they tested BMI and controlled for it.I would also add that while they achieved significant p value, it was close and standard deviation was large.

I think starches are great. Potatoes have been showing to be the most satiating food you can eat, and sweet potatoes (my preferred starch) are loaded with phytonutrients that have demonstrated protective effects against cancer. Also resistant starches found in potatoes may be very good for our micro biome.

I do, however, an issue with starches eaten with meats. It may be that animal protein, animal fat and starches combined yield a negative effect. I write about this extensively in my book. The problem with the population they are studying is that they eat a standard American diet. It can be assumed therefore that they have intramyocellular fat and insulin resistance. If you are insulin resistant and you add starches you will not be able to process the carbs correctly.

On a predominately plant based diet, you can process starch perfectly. Starches therefore become part of a healthy diet. This is why you see societies that eat a predominately starch based diet having such great health.
https://www.facebook.com/drgarth/posts/1157857427568497

[Fjod0r]

https://www.facebook.com/drgarth/posts/1157857427568497

lol. Jag gissar författarna kämpar med en förklaring för att de/vi inte har en bra förklaring. Dr i-sell-stuff bidrar inte till debatten.

[Wzup2u]

http://i.imgur.com/zzDxYx6.gif

[upperkatt]

http://i.imgur.com/zfNPTLu.gif

[King Grub]

http://i.imgur.com/NrWG5ij.jpg

[PureWhey]

http://www.gifwave.com/download/1txd/hot-potatoes.gif