Dr Sam's Rotation
Follow us on
  • Daily Dose
  • Events
  • Links
  • About
  • Contact Us
  • Calendar

Can a morning banana help to lower your patient’s blood pressure? 

6/3/2013

0 Comments

 
Picture
The World Health Organization (WHO) recently published a meta-analysis seeking to understand the effect of potassium intake on cardiovascular risk factors such as blood pressure and stroke. Current estimates from around the world suggest that average potassium consumption is below 80 mEq/day. Data in the meta-analysis supports this claim as 80% of the studies reported a baseline potassium consumption of <80 mEq/day. The main culprit of low potassium intake is consumption of processed foods such as fast food, frozen, canned, and packaged food items. The majority of these foods contain very little potassium, while fresh fruits, vegetables, fish and meat contain high levels of potassium. 

The study found that the most beneficial level of daily potassium intake was between 90-120 mEq which reduced systolic and diastolic blood pressure by approximately 7.2 mm Hg and 4.0 mm Hg, respectively. But hold it – the age old mantra of “too much of a good thing may not be good for you” applies here. Potassium intake at higher than 120 mEq per day, though still an improvement from baseline, saw minimal results in terms of lowering blood pressure.  So, the key is to eat enough bananas to fall within 90-120 mEq but not a banana more (fyi that’s only 9-10 bananas). Researchers also found a meaningful decrease in incidence of stroke with higher potassium intake.

One caveat before suggesting the high potassium diet to everyone: significant effects in blood pressure lowering only occurred in those patients with hypertension. 

If patients are hesitant about increasing the amount of bananas in their diet, there’s yet more good news: increasing potassium intake through dietary supplements is as equally effective as potassium ingested through dietary changes (1).  Supplements are available with or without a prescription, but potassium levels should always be monitored before and during supplementation as other medications used for blood pressure or underlying kidney disease may already be increasing potassium levels. 

Not crazy about bananas?  Here are some alternatives you probably did not know were loaded with potassium(2):
·      Yogurt, plain (1 cup): 14 mEq
·      Avocado (one whole): 32 mEq
·      Orange juice (4oz): 7 mEq
·      Baked potato with skin: 21 mEq
An easy addition to any kitchen would be a salt substitute, which removes sodium and replaces it with up to 15-20 mEq of potassium per ¼ teaspoon.  So… the lesson to be learned here?  In addition to adding more bananas to the grocery list, a salt substitute (Morton salt substitute, NoSalt, Nu-Salt) should be as well.
1. Aburto NJ et al. Effect of increased potassium intake on cardiovascular risk factors and disease. Systematic review and meta-analyes. BMJ 2013 Apr 4; 346:f1378. 
2. Potassium Content of Foods and Salt Substitutes. Pharmacists Letter. http://pharmacistsletter.therapeuticresearch.com/pl/41250136. Accessed May 22, 2013.


Posted By: Katie Yomen, PharmD. Candidate 2014

0 Comments



Leave a Reply.


    Archives

    February 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    July 2018
    June 2018
    May 2018
    April 2018
    March 2018
    February 2018
    January 2018
    December 2017
    November 2017
    October 2017
    September 2017
    August 2017
    June 2017
    May 2017
    April 2017
    March 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    August 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    November 2014
    October 2014
    September 2014
    August 2014
    July 2014
    June 2014
    May 2014
    April 2014
    March 2014
    February 2014
    November 2013
    October 2013
    September 2013
    August 2013
    June 2013
    May 2013
    April 2013

    Categories

    All
    Books
    Clinical
    Continuing Education
    Dr Sam Post
    Management
    Over The Counter
    Parkinson's Disease
    Student Post
    Technology
    Web Site

    Enter your email address to subscribe to our blog:

    Delivered by FeedBurner

    RSS Feed

Proudly powered by Weebly