Heart Rate Zones, Oxalates, & More
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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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Lost Connections – by Johann Hari
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Johann Hari had a long journey through (and out of!) depression, and shares his personal findings, including his disappointment with medical options, and a focus on the external factors that lead to depression.
And that’s key to this book—while he acknowledges later in the book that there are physiological factors involved in depression, he wants to look past things we can’t change (like genes accounting for 37% of depression) or things that there may be unwanted side-effects to changing (as in the case of antidepressants, for many people), to things we genuinely can choose.
And no, it’s not a “think yourself happy” book either; rather, it looks at nine key external factorsthat a) influence depression b) can mostly be changed.
If the book has a downside, it’s that the author does tend to extrapolate his own experience a lot more than might be ideal. If SSRIs didn’t help him, they are useless, and also the only kind of antidepressant. If getting into a green space helped him, a Londoner, someone who lives in the countryside will not be depressed in the first place. And so forth. It can also be argued that he cherry-picked data to arrive at some of his pre-decided conclusions. He also misinterprets data sometimes; which is understandable; he is after all a journalist, not a scientist.
Nevertheless, he offers a fresh perspective with a lot of ideas, and whether or not we agree with them all, new ideas tend to be worth reading. And if even one of his nine ideas helps you, that’s a win.
Bottom line: if you’d like to explore the treatment of depression from a direction other than medicalization or psychotherapy, then this is will be a good book for you.
Click here to check out Lost Connections, and reforge yours!
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Delicious Daily Daal
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You’re not obliged to eat this every day, but you might want to. The reason we called this one this, is because it’s a super simple recipe (don’t be put off by the long ingredients list; it’s mostly spices making it look long) which, after you’ve done it a couple of times, you could practically do it in your sleep quickly and easily.
The name “lentil daal” is a bit like “naan bread”—a redundant tautology repeated more than once unnecessarily, but it helps for international clarity. The dish is usually served with naan, by the way, and rice. We don’t have room for those today, maybe we’ll do them another day; for now, you can just cook rice how you normally do, and buy naan if necessary.
Writer’s note: I love strong flavors; many people don’t. For this reason I’m going to give a “basic” version. Please feel free to multiply the spices if you feel so inclined. Where I give “one teaspoon” of a spice below, I’d use a tablespoon at home. Chili peppers can vary in heat a lot even within the same type, so what I do for any given batch is taste one (raw), judge the heat, and use an appropriate number of peppers accordingly. If you don’t want to do that, I suggest just guessing low (as per the instructions below) and if you find at the end you want more heat, you can always stir in a little hot sauce. I know that sounds heretical, but at the end of the day, the primary goal of cooking is to have the meal you want at the end of it.
You will need
- 1 1/2 cups red lentils
- 1 large onion, chopped
- 1 large bulb garlic, minced
- 1 oz ginger, grated
- 2 hot peppers (e.g. serrano), chopped
- 1 tsp ground cumin
- 1 tsp ground coriander
- 1 tsp ground turmeric
- 1 tsp garam masala (this is also ground, but it doesn’t come any other way)
- 1 tsp chili flakes (omit if you’re not a fan of heat)
- 2 tsp cracked black pepper
- 1 tsp salt ← I wouldn’t recommend multiplying this one unless later, to taste. In fact, instead of 1 tsp salt I use 2 tsp MSG, which has less sodium than 1 tsp salt. But “1 tsp salt” is the “easy to find in the store” version.
- 2 large or 3 small tomatoes, chopped (or 1 can chopped tomatoes)
- 2 shallots, thinly sliced
- 1 tsp cumin seeds
- 1 tsp mustard seeds
- 1 tsp coriander seeds
- 1 tsp black peppercorns
- 1 lime
- 1/2 cup fresh cilantro, or if you have the “that tastes like soap” gene, parsley, chopped
- Coconut oil for cooking (if you don’t like coconut, consider springing for avocado oil—if you use olive oil, it’ll add an olivey taste which changes the dish a lot; not inherently bad, but it feels a lot less like traditional daal; seed oils are less healthy and we don’t recommend them; ghee is a traditional option and not bad in moderation, but not as healthy as the oils we mentioned first)
- Water for cooking the lentils
Method
(we suggest you read everything at least once before doing anything)
1) In a saucepan, boil water and add the lentils; let them simmer while doing the next things.
2) Sauté the onions until translucent. This should only take a few minutes.
3) Add the garlic, ginger, and hot peppers, and keep stirring for another couple of minutes.
4) Add the ground spices (cumin, coriander, turmeric, garam masala) chili flakes, and cracked black pepper, as well as the salt or MSG if using (not both), and stir them in quickly but thoroughly.
For the next step, you may need to transfer to larger pan if your sauté pan isn’t big enough to take the volume; if so, that’s fine, the sauté has done its job and can have a rest now. If your sauté pan is big enough, just carry on in the same pan; this is perfect.
5) Add the lentils with the water you cooked them in (there might not be much water left now, as the lentils will have absorbed a lot of it; this is fine) as well as the chopped tomatoes.
6) Simmer until it has the consistency of a very thick sauce (you can add a splash more water here and there if it seems to need more). In the West it’s common to serve lentils “al dente”, but in the East it’s usual to (for dishes like this) cook them until they start to
7) Add the juice of at least 1/2 of your lime, or the whole lime if you feel so inclined.
8) In a pre-heated skillet, flash-fry the sliced shallots and the seeds (cumin, coriander, mustard, black peppercorns) at the hottest temperature you can muster. Don’t worry if the oil smokes; we’re only going to be at this tadka-making stage for a moment and nothing will stick provided you keep it moving. When the seeds start popping, it’s ready. Add it all to the big pan and stir in.
9) Add the cilantro-or-parsley garnish once you’re ready to serve.
Enjoy!
Learn more
For those interested in some of the science of what we have going on today:
- Why You’re Probably Not Getting Enough Fiber (And How To Fix It)
- How Much Spice Is Right?
- Tasty Polyphenols
Take care!
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Hearty Healthy Ragù
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Ragù is a traditional Italian meaty sauce with tomato, and is the base for a number of other Italian dishes. It can be enjoyed as-is, or with very minor modifications can be turned into a Bolognese sauce or a lasagna filling or various other things. Our variations from tradition are mainly twofold here: we’re using nutrition-packed lentils instead of meat (but with a couple of twists that make them meatier), and we’re not using wine.
Traditionally, red wine is used in a ragù (white wine if you want to make it into a Bolognese sauce, by the way), but with all we’re doing it’s not necessary. If you want to add a splash of wine, we’re not going to call that a healthy ingredient, but we’re also not the boss of you
You will need
- 1 large onion (or equivalent small ones), chopped roughly
- 1 bulb garlic (or to your heart’s content), chopped finely or crushed
- 4 large tomatoes, chopped (or 2 cans chopped tomatoes)
- 1 tube (usually about 7 oz) tomato purée
- 1 cup brown lentils (green lentils will do if you can’t get brown)
- 1 tbsp chia seeds
- 1 tbsp black pepper, cracked or coarse ground
- 1 bunch fresh basil, finely chopped (or 1 tbsp, freeze-dried)
- 1 bunch fresh oregano, finely chopped (or 1 tbsp, freeze-dried)
- 1 tbsp nutritional yeast (failing that, 1 tbsp yeast extract, yes, even if you don’t like it, we promise it won’t taste like it once it’s done; it just makes the dish meatier in taste and also adds vitamin B12)
- 1 tsp cumin, ground (note that this one was tsp, not tbsp like the others)
- 1 tsp MSG, or 2 tsp low-sodium salt
- 4 cups water
- Olive oil for frying (ideally Extra Virgin, but so long as it’s at least marked virgin olive oil and not cut with other oils, that’s fine)
- Parsley, chopped, to garnish
Method
(we suggest you read everything at least once before doing anything)
1) Put the lentils in a small saucepan, or if you have one, a rice cooker (the rice cooker is better; works better and requires less attention), adding the chia seeds, MSG or low sodium salt, and nutritional yeast (or yeast extract). as well as the cumin. Add 4 cups boiling water and turn on the heat to cook them. This will probably take about 15–20 minutes; you want the lentils to be soft; a tiny bit past al dente, but not so far as mushy.
2) Fry the onion in some olive oil in a big pan (everything is going in here eventually if the pan is big enough; if it isn’t, you’ll need to transfer to a bigger pan in a bit). Once they’re nearly done, throw in the garlic too. If the lentils aren’t done yet, take the onions and garlic off the heat while you wait. After a few times of doing this recipe, you’ll be doing everything like clockwork and it’ll all align perfectly.
3) Drain the lentils (if all the water wasn’t absorbed; again, after doing it a few times, you’ll just use the right amount of water for your apparatus) but don’t rinse them (remember you put seasonings in here!), and add them to the pan with the onions and garlic; add a splash more olive oil if necessary, and stir until all the would-be-excess fat is absorbed into the lentils.
Note: the excess fat to be absorbed by the lentils was a feature not a bug; we wanted a little fat in the lentils! Makes the dish meatier and tastier, as well as more nutrient-dense.
4) add the tomatoes and tomato purée, stirring them in thoroughly; add the basil and oregano too and stir those in as well. Set it on a low heat for at least 10–15 minutes, stirring occasionally to let the flavors blend.
(if you happen to be serving pasta with it, then the time it takes to boil water and cook the pasta is a good time for the flavors to do their thing)
5) take it off the heat, and add the parsley garnish. It’s done!
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- What Is The Mediterranean Diet, Anyway?
- Four Ways To Upgrade The Mediterranean
- Eat More (Of This) For Lower Blood Pressure ← one more reason for the brown lentils today
- Chia: The Tiniest Seeds With The Most Value
- Black Pepper’s Impressive Anti-Cancer Arsenal
- The Many Health Benefits of Garlic
- Olive Oil: Is “Extra Virgin” Worth It?
Take care!
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The Circadian Rhythm: Far More Than Most People Know
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The Circadian Rhythm: Far More Than Most People Know
This is Dr. Satchidananda (Satchin) Panda, the scientist behind the discovery of the blue-light sensing cell type in the retina, and the many things it affects. But, he’s discovered more…
First, what you probably know (with a little more science)
Dr. Panda discovered that melanopsin, a photopigment, is “the primary candidate for photoreceptor-mediated entrainment”.
To put that in lay terms, it’s the brain’s go-to for knowing approximately what time of day or night it is, according to how much light there is (or isn’t), and how long it has (or hasn’t) been there.
But… the brain’s “go-to” isn’t the only method. By creating mice without melanopsin, he was able to find that they still keep a circadian rhythm, even in complete darkness:
Melanopsin (Opn4) Requirement for Normal Light-Induced Circadian Phase Shifting
In other words, it was a helpful, but not completely necessary, means of keeping a circadian rhythm.
So… What else is going on?
Dr. Panda and his team did a lot of science that is well beyond the scope of this main feature, but to give you an idea:
- With jargon: it explored the mechanisms and transcription translation negative feedback loops that regulate chronobiological processes, such as a histone lysine demathlyase 1a (JARID1a) that enhances Clock-Bmal1 transcription, and then used assorted genomic techniques to develop a model for how JARID1a works to moderate the level of Per transcription by regulating the transition between its repression and activation, and discovered that this heavily centered on hepatic gluconeogenesis and glucose homeostasis, facilitated by the protein cryptochrome regulating the fasting signal that occurs when glucagon binds to a G-protein coupled receptor, triggering CREB activation.
- Without jargon: a special protein tells our body how to respond to eating/fasting at different times of day—and conversely, certain physiological responses triggered by eating/fasting help us know what time of day it is.
- Simplest: our body keeps on its best cycle if we eat at the same time every day
This is important, because our circadian rhythm matters for a lot more than sleeping/waking! Take hormones, for example:
- Obvious hormones: testosterone and estrogen peak in the mornings around 9am, progesterone peaks between 10pm and 2am
- Forgotten hormones: cortisol peaks in the morning around 8:30am, melatonin peaks between 10pm and 2am
- More hormones: ghrelin (hunger hormone) peaks around 10am, leptin (satiety hormone) peaks 20 minutes after eating a certain amount of satiety-triggering food (protein does this most quickly), insulin is heavily tied to carbohydrate intake, but will still peak and trough according to when the body expects food.
What does this mean for us in practical terms?
For a start, it means that intermittent fasting can help guard against metabolic and related diseases (including inflammation, and thus also cancer, diabetes, arthritis, and more) a lot more if we practice it with our circadian rhythm in mind.
So that “8-hour window” for eating, that many intermittent fasting practitioners adhere to, is going to do much, much better if it’s 10am to 6pm, rather than, say, 4pm to midnight.
Additionally, Dr. Panda and his team found that a 12-hour eating window wasn’t sufficient to help significantly.
Some other take-aways:
- For reasons beyond the scope of this article, it’s good to exercise a) early b) before eating, so getting in some exercise between 8.30am and 10am is ideal
- It also means it’s beneficial to “front-load” eating, so a large breakfast at 10am, and smaller meals/snacks afterwards, is best.
- It also means that getting sunlight (even if cloud-covered) around 8.30am helps guard against metabolic disorders a lot, since the light remains the body’s go-to way of knowing the time.
- We realize that sunlight is not available at 8.30am at all latitudes at all times of year. Artificial is next-best.
- It also means sexual desire will typically peak in men in the mornings (per testosterone) and women in the evenings (per progesterone), but this is just an interesting bit of trivia, and not so relevant to metabolic health
What to do next…
Want to stabilize your own circadian rhythm in the best way, and also help Dr. Panda with his research?
His team’s (free!) app, “My Circadian Clock”, can help you track and organize all of the body’s measurable-by-you circadian events, and, if you give permission, will contribute to what will be the largest-yet human study into the topics covered today, to refine the conclusions and learn more about what works best.
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Retrain Your Brain – by Dr. Seth Gillihan
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15-Minute Arabic”, “Sharpen Your Chess Tactics in 24 Hours”, “Change Your Life in 7 Days”, “Cognitive Behavioral Therapy in 7 weeks”—all real books from this reviewer’s shelves.
The thing with books with these sorts of time periods in the titles is that the time period in the title often bears little relation to how long it takes to get through the book. So what’s the case here?
You’ll probably get through it in more like 7 days, but the pacing is more important than the pace. By that we mean:
Dr. Gillihan starts by assuming the reader is at best “in a rut”, and needs to first pick a direction to head in (the first “week”) and then start getting one’s life on track (the second “week”).
He then gives us, one by one, an array of tools and power-ups to do increasingly better. These tools aren’t just CBT, though of course that features prominently. There’s also mindfulness exercises, and holistic / somatic therapy too, for a real “bringing it all together” feel.
And that’s where this book excels—at no point is the reader left adrift with potential stumbling-blocks left unexamined. It’s a “whole course”.
Bottom line: whether it takes you 7 hours or 7 months, “Cognitive Behavioral Therapy in 7 Weeks” is a CBT-and-more course for people who like courses to work through. It’ll get you where you’re going… Wherever you want that to be for you!
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The Mental Health Dangers Of Oversharing
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Oversharers can be fun and amiable; the life of the party. In and of itself, this something that can be considered “pro-social” and thus healthy.
But the problem for one’s mental health in the long-run lies in the “over” part of oversharing. Sometimes, if not checking in with the other person’s comfort, oversharing can be “trauma-dumping”, and push people away. Alternatively, if the oversharing exposes an unmet need, it can make the other person feel obliged to try to help in some fashion, which in the long run may also cause awkwardness and withdrawal.
Some potential problems are purely internal, such the feelings of shame or anxiety that can come afterwards; “I should not have been so vulnerable”, “What if my friends think badly of me now?”, etc.
And of course, sometimes those fears are then validated by reality, if “friends” indeed take advantage of that, or withdraw their friendship. That’s a minority occurrence, but it doesn’t make it any less of a crushing thing if it happens.
Sometimes people overshare because of being a bad judge of what’s a socially-approved appropriate amount of sharing; sometimes people overshare out of a need for closeness, and perhaps the hope of hearing what one needed to hear previously.
The dangers of oversharing don’t mean that we should never speak about our experiences and feelings; in fact sometimes, it is the most healthy thing to do—be it because it’s something that needs communicating to a specific person, or because it’s something we just need to “get off our chest”.
In short, it can be good to share! It can also be good to do so judiciously, by conscious decision and not in response to a spur-of-the-moment impulse, and remember to prioritize our own safety.
Below, Alain de Botton explains more of the psychodynamics of this:
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10almonds tip, not included in the video: unsure whether your urge to share is too impulsive or not? Write a letter/email, and wait until the next day to decide whether or not to send it.
Want to read more?
Check out:
Breathe; Don’t Vent (At Least In The Moment)
Take care!
Don’t Forget…
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Learn to Age Gracefully
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