
My dad subscribes me to this most awesome newsletter: Nutrition Action Newsletter. It's only 13 pages, but I always feel smarter after reading it. If he didn't subscribeme, I would pay for the subscription (and that's saying something since I'm so cheap I read most of my magazines sitting on the benches by the checkout at Walmart or while standing in line at HEB.
Here is some info on potassium from the September 2010 issue (and this is just a small section of what this issue has in it)
Frank Sacks (professor of cardiovascular disease prevention at the Harvard School of Public Health) says "It's absolutely clear that potassium can lower blood pressure". The article sites some impressive studies. Potassium seems to counter the damage caused by salt. Scientists aren't completely sure HOW potassium lowers blood pressure - they THINK it may make the larger blood vessels more flexible.. Potassium Citrate lowers blood pressure more than potassium chloride. Potassuim Citrate is found in fruits & vegetables. Getting potassium from plants is preferable because you really can't overdose even if you ry (you can OD on supplements). Plant-based potassium also reduces the risk of kidney stones (they explained why, but I don't want to be too wordy in this post)
I used to think bananas were the best source of potassium, but there are quite a few plants that provide more for less calories.
Bananas (1 each) supplies 9% of your daily allowance of potassium for 105 calories
BUT.....
Beet greens (1/2 cup cooked) supplies 14% of the daily allowance of potassium for just 20 calories
Swiss Chard (1/2 cup cooked) 10% for 20 calories (Chard is a cousin to Beets)
Sweet Potatoes with Skin (1/2 cup cooked) 10% for 90 calories
Spinach (1/2 cup cooked) 9% for 20 calories
Cantaloupe (1/4 of a melon) 8% for 45 calories
Also Notable......
Kidney Beans, Pinto Beans, and Lentils (1/2 cup cooked) - 8% of the daily alowance for around 120 calories
Orange Juice (1 cup) - 9% for around 120 calories
Plain yogurt low-fat (1 cup) - 12% for 135 calories