Heart Rate Zones, Oxalates, & More
We’re answering your questions and requests, revisiting topics, and discussing heart rates during exercise, osteoporosis, and the effects of spinach. No question is too big or small!
It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small 😎
❝I think the heart may be an issue for lots of us. I know it is for me due to AFib. When I’m in my training zone like on a treadmill, I’m usually around 110 to 120. But there are occasionally times when I’m at 140 or 150. How dangerous is that? If I use that formula of 180 minus age, thats 103. I get nothing from that. My resting heart rate is in the 50 to 60 range.❞
First, for safety, let us draw attention to our medical disclaimer at the bottom of each email, and also specifically note that we are not cardiologists here, let alone your cardiologist. There’s a lot we can’t know or advise about. However, as general rules of thumb:
For people without serious health conditions, it is considered good and healthful for one’s heart rate to double (from its resting rate) during exercise, with even more than 2.5x resting rate being nothing more than a good cardio workout.
As for “180 minus age” (presuming you mean: to calculate the safe maximum heart rate), more common (and used by the American Heart Association) is 220 minus age. In your case, that’d give 143.
Having atrial fibrillation may change this however, and we can’t offer medical advice.
We can point to this AHA “AFib Resources For Patients and Professionals”, including this handy FAQ sheet which says:
“Am I able to exercise?” / “Yes, as long as you’re cleared by your doctor, you can perform normal activities of daily living that you can tolerate” (accompanied by a little graphic of a person using an exercise bike)
You personally probably know this already, of course, but it’s quite an extensive collection of resources, so we thought we’d include it.
It’s certainly a good idea for everyone to be aware of their healthy heart rate ranges, regardless of having a known heart condition or not, though!
American Heart Association: Target Heart Rates Chart
❝I would like to see some articles on osteoporosis❞
You might enjoy this mythbusting main feature we did a few weeks ago!
The Bare-Bones Truth About Osteoporosis
❝Interesting, but… Did you know spinach is high in oxylates? Some people are sensitive and can cause increased inflammation, joint pain or even kidney stones. Moderation is key. My sister and I like to eat healthy but found out by experience that too much spinach salad caused us joint and other aches.❞
It’s certainly good to be mindful of such things! For most people, a daily serving of spinach shouldn’t cause ill effects, and certainly there are other greens to eat.
We wondered whether there was a way to reduce the oxalate content, and we found:
How to Reduce Oxalic Acid in Spinach: Neutralizing Oxalates
…which led us this product on Amazon:
Nephure Oxalate Reducing Enzyme, Low Oxalate Diet Support
We wondered what “nephure” was, and whether it could be trusted, and came across this “Supplement Police” article about it:
Nephure Review – Oxalate Reducing Enzyme Powder Health Benefits?
…which honestly, seems to have been written as a paid advertisement. But! It did reference a study, which we were able to look up, and find:
In vitro and in vivo safety evaluation of Nephure™
…which seems to indicate that it was safe (for rats) in all the ways that they checked. They did not, however, check whether it actually reduced oxalate content in spinach or any other food.
The authors did declare a conflict of interest, in that they had a financial relationship with the sponsor of the study, Captozyme Inc.
All in all, it may be better to just have kale instead of spinach:
- 20 Foods High in Oxalates to Limit if You Have Kidney Stones
- The Kidney Dietician: The Best Low Oxalate Greens
We turn the tables and ask you a question!
We’ll then talk about this tomorrow:
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