Which Bell Peppers To Pick?
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Bell Peppers: A Spectrum Of Specialties
We were going to do this as part of our ongoing “This Or That?” challenge, but as there are four main types all with many different benefits, we thought this bunch of fruits deserved a main feature.
And yes, they’re botanically fruits, even if culinarily used as vegetables—much like tomatoes, famously!
They’re all the same (but also very much not)
A thing to know is that whether bell peppers be green, yellow, orange, or red, they’re all the same plant, Capiscum anuum. All that differs is how early or late they’re harvested.
Notwithstanding the “Capiscum” genus, they don’t contain capsaicin (as is found in hot peppers). Capsaicin’s a wonderful phytochemical:
Capsaicin For Weight Loss And Against Inflammation
…but today we’re all about the bell peppers.
So, let’s see how they stack up!
💚 Green for lutein
Lutein is especially important for the eyes and [the rest of the] brain, to the point that there’s now an Alzheimer’s test that measures lutein concentration in the eye:
Green peppers have most of this important carotenoid, though the others all have some too. See also:
💛 Yellow for vitamin C
Yellow peppers are technically highest in vitamin C, but all of them contain far more than the daily dose per fruit already, so if there’s any color of pepper that’s nutritionally the most expendable, it’s yellow, since any other color pepper can take its place.
Watch out, though! Cooking destroys vitamin C, so if you want to get your Cs in, you’re going to want to do it raw.
🧡 Orange for zeaxanthin and cryptoxanthins
Similar in their benefits to lutein, these antioxidant carotenoids are found most generously in orange peppers (20x as much as in yellow, 10x as much as in red, and slightly more than in green).
❤️ Red for vitamins A & B6
Red peppers are richest by far in vitamin A, with one fruit giving the daily dose already. The others have about 10% of that, give or take.
Red peppers also have the most vitamin B6, though the others also have nearly as much.
❤️ Red for lycopene
We must do a main feature for lycopene sometime, as unlike a lot of antioxidant carotenoids, lycopene is found in comparatively very few foods (most famously it’s present in tomatoes).
Red is the only color of pepper to have lycopene.
10almonds tip: to get the most out of your lycopene, cook these ones!
Lycopene becomes 4x more bioavailable when cooked:
Lycopene in tomatoes: chemical and physical properties affected by food processing ← this paper is about tomatoes but lycopene is lycopene and this applies to the lycopene in red peppers, too
And the overall winner is…
You! Because you get to eat all four of them
Enjoy!
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It’s A Wrap
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We hope all our readers have had a great and healthy week! Here are some selections from health news from around the world:
A lack of transparency
Thousands of chemicals blanket-approved for food contact in packaging, under the FDA’s “Generally Recognized As Safe” umbrella, have been found in humans.
This highlights a gap in the safeguarding system, because the GRAS classification is given when there’s no known significant association with disease—but in this case, a problem can occur when the build-up in the blood and brain cause problems much later.
Read in full: Thousands of toxins from food packaging found in humans – research
Learn more: We Are Such Stuff As Bottles Are Made Of (It’s Not Fantastic To Be Plastic)
Cafestol for weight loss?
Most coffee intervention studies use instant coffee. Which is understandable; they are scientists on a budget, not coffee shop baristas. But, instant coffee is low in some of coffee’s important compounds, such as cafestol—which as it turns out, can lower not only overall body fat, but also (importantly!) visceral fat.
Read in full: 12-week coffee compound study shows promising results for weight and fat reduction in at-risk individuals
Learn more: The Bitter Truth About Coffee (or is it?)
Doing something is better than doing nothing
While a lot of the bad news both locally and around the world can be infuriating and/or depressing, turning a blind eye may not be the best approach for dealing with it. This study was in teens, but it’s likely that the benefits are similar for other ages too:
Read in full: Racial justice activism, advocacy found to reduce depression, anxiety in some teens
Learn more: Make Social Media Work For Your Mental Health
A ray of hope!
Sometimes, the topic of sun and sunscreens can seem like “damned if you do; damned if you don’t”, with regard to the harmful effects of the sun, and in some cases, potentially harmful effects of some sunscreen chemicals. We’ve argued ultimately in favor of sunscreens in this tug-of-war, but it’s nice to see improvements being made, in this case, with lignin-based sunscreen (a plant-based by-product of the pulp industry).
Read in full: Researchers create high-performing, eco-friendly sunscreen
Learn more: Who Screens The Sunscreens?
All about the pores
Researchers have identified a protein, and from that, a stack of protein fragments, that are involved in the formation of large pores. This is important, as it’s pointing to a means of relief for a lot of inflammatory diseases.
Read in full: Scientists unravel the process of pore formation in cells
Learn more: Why Do We Have Pores, And Could We Not?
Getting to the bottom of Crohn’s
If you have Crohn’s, or perhaps someone close to you has it, then you’ll be familiar with the common medical refrain of “we don’t know”. While this honesty is laudable, it’s not reassuring. So, it’s good that researchers are making progress in understanding why many people with Crohn’s may respond differently not only to lifestyle interventions, but also to various relevant drugs—allowing doctors to prescribe the right treatment for the right person.
Read in full: Patient-derived gut organoids reveal new insights into Crohn’s disease subtypes
Learn more: Diet Tips for Crohn’s Disease
Another carotenoid that holds back Alzheimer’s
Phytoene is a carotenoid that is found in many red, orange, or yellow foods, including tomatoes, carrots, apricots, red peppers, oranges, mandarins and passion fruit, among others. Researchers have found that it slows the onset of symptoms associated with the formation of amyloid plaques, by 30–40%, and increases longevity by 10–19%:
Read in full: Carotenoid phytoene shows potential in slowing Alzheimer’s plaque formation and increasing lifespan
Learn more: Brain Food? The Eyes Have It! ← this is about a different carotenoid, lutein, found mostly in dark green leafy vegetables, but it’s best to enjoy both 😎
Take care!
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One More Resource Against Osteoporosis!
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Your Bones Were Made For Moving Too!
We know that to look after bone health, resistance training is generally what’s indicated. Indeed, we mentioned it yesterday, and we’ve talked about it before:
Resistance Is Useful! (Especially As We Get Older)
We also know that if you have osteoporosis already, some exercises are a better or worse idea than others:
Osteoporosis & Exercises: Which To Do (And Which To Avoid)
However! New research suggests that also getting in your recommended 150 minutes per week of moderate exercise slows bone density loss.
The study by Dr. Tiina Savikangas et al. looked at 299 people in their 70s (just over half being women) and found that, over the course of a year, bone mineral density loss was inversely correlated with moderate exercise as recorded by an accelerometer (as found in most fitness-tracking wearables and smartphones).
In other words: those who got more minutes of exercise, kept more bone mineral density.
As well as monitoring bone mineral density, the study also looked at cross-sectional area, but that remained stable throughout.
As for how much is needed:
❝Even short bursts of activity can be significant for the skeleton, so we also looked at movement in terms of the number and intensity of individual impacts. For example, walking and running cause impacts of different intensities.
We found that impacts that were comparable to at least brisk walking were associated with better preservation of bone mineral density.❞
Read more: Impacts during everyday physical activity can slow bone loss ← pop-science source, interviewing the lead researcher
On which note, we’ve a small bone to pick…
As a small correction, the pop-science source says that the subjects’ ages ranged from 70 to 85 years; the paper, meanwhile, clearly shows that the age-range was 74.4±3.9 years (shown in the “Results” table), rounded to 74.4 ± 4 years, in the abstract. So, certainly no participant was older than 78 years and four months.
Why this matters: the age range itself may be critical or it might not, but what is important is that this highlights how we shouldn’t just believe figures cited in pop-science articles, and it’s always good to click through to the source!
This paper is a particularly fascinating read if you have time, because—unlike a lot of studies—they really took great care to note what exactly can and cannot be inferred from the data, and how and why.
Especially noteworthy was the diligence with which they either controlled for, or recognized that they could not control for, far more variables than most studies even bother to mention.
This kind of transparency is critical for good science, and we’d love to see more of it!
Want to apply this to your life?
Tracking minutes-of-movement is one of the things that fitness trackers are best at, so connect your favourite app (one of these days we’ll do a fitness tracker comparison article) and get moving!
And as for the other things that fitness trackers do? As it turns out, they do have their strengths and weaknesses, which are good to bear in mind:
Take care!
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Avocado, Coconut & Lime Crumble Pots
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This one’s a refreshing snack or dessert, whose ingredients come together to make a very good essential fatty acid supplement. Coconut is a good source of MCTs, avocados are rich in omega 3, 6, and 9, while chia seeds are a great ALA omega 3 food, topping up the healthy balance.
You will need
- flesh of 2 large ripe avocados
- grated zest and juice of 2 limes
- 3 tbsp coconut oil
- 1 tbsp chia seeds
- 2 tsp honey (omit if you prefer a less sweet dish)
- 1 tsp desiccated coconut
- 4 low-sugar oat biscuits
Method
(we suggest you read everything at least once before doing anything)
1) Blend the avocado, lime juice, coconut oil, honey, and half the desiccated coconut, in a food processor.
2) Scoop the mixture into 4 ramekins (or equivalent-sized glasses), making sure to leave a ½” gap at the top. Refrigerate for at least 2–4 hours (longer is fine if you’re not ready to serve yet).
3) Assemble, by crumbling the oat biscuits and sprinkling on top of each serving, along with the other half of the desiccated coconut, the lime zest, and the chia seeds.
4) Serve immediately:
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
Take care!
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Live Long, Die Short – by Dr. Roger Landry
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First know: “die short” is not about your height—although on average, short people do live longer, partly because insulin-like growth factor (IGF-1) promotes both tallness and accelerated DNA damage (thus, aging and cancer), and partly because if someone is very tall, it can cause circulatory problems, and without a nice easy flow of blood through the brain, bad things happen (such as accumulation of harmful detritus in the brain, and increased stroke risk too).
Next know: “die short” is, in this book, actually about shortening the decline at the end of life. Sometimes people say “I don’t want to live 10 years longer; they’ll be the 10 most miserable years”, but in fact if we look after our health, we will be healthy for perhaps >9.5 of our last 10 years, while an unhealthy person may just get their expected “10 most miserable years” 10 or 20 years earlier (and then die).
So, in short (so to speak), it’s about increasing healthspan.
To enjoy the longest and healthiest healthspan, Dr. Landry offers 10 tips. We’ll not keep them a secret; they are:
- Use it or lose it
- Keep moving
- Challenge your brain
- Stay connected
- Lower your risks
- Never act your age
- Wherever you are, be fully there
- Find your purpose
- Have children in your life
- Laugh to a better life
Each of these has a chapter devoted to them, in section 2 of the book (section 1 is about what we know about healthy aging, and section 3 is about where we go from here).
You’ll notice that one item not generally found on such lists is “have children in your life”; to be clear, they don’t have to be your children, and/but they do have to be actual current children; any now-grown-up progeny aren’t what’s being talked about here (wonderful as they may be, any support role they may play gets filed under “stay connected” instead).
The style is mostly impersonal pop-science with occasional personal anecdotes, and the book’s formatting (many subheadings within chapters) makes it easy to read a bit at a time, if that’s your preference. There’s a modest, but extant, bibliography.
Bottom line: if you’d like to stay younger as you get older, this book goes into a lot of detail about 10 ways to do just that.
Click here to check out Live Long, Die Short, and live long, die short!
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CLA for Weight Loss?
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Conjugated Linoleic Acid for Weight Loss?
You asked us to evaluate the use of CLA for weight loss, so that’s today’s main feature!
First, what is CLA?
Conjugated Linoleic Acid (CLA) is a fatty acid made by grazing animals. Humans don’t make it ourselves, and it’s not an essential nutrient.
Nevertheless, it’s a popular supplement, mostly sold as a fat-burning helper, and thus enjoyed by slimmers and bodybuilders alike.
❝CLA reduces bodyfat❞—True or False?
True! Contingently. Specifically, it will definitely clearly help in some cases. For example:
- This study found it doubled fat loss in chickens
- It significantly increased delipidation of white adipose tissue in these mice
- The mice in this study enjoyed a 43–88% reduction in (fatty) weight gain
- Over the course of a six-week weight-loss program, these mice got 70% more weight loss on CLA, compared to placebo
- In this study, pigs that took CLA on a high-calorie diet gained 50% less weight than those not taking CLA
- On a heart-unhealthy diet, these hamsters taking CLA gained much less white adipose tissue than their comrades not taking CLA
- Another study with pigs found that again, CLA supplementation resulted in much less weight gained
- These hamsters being fed a high-cholesterol diet found that those taking CLA ended up with a leaner body mass than those not taking CLA
- This study with mice found that CLA supplementation promoted fat loss and lean muscle gain
Did you notice a theme? It’s Animal Farm out there!
❝CLA reduces bodyfat in humans❞—True or False?
False—practically. Technically it appears to give non-significantly better results than placebo.
A comprehensive meta-analysis of 18 different studies (in which CLA was provided to humans in randomized, double-blinded, placebo-controlled trials and in which body composition was assessed by using a validated technique) found that, on average, human CLA-takers lost…
Drumroll please…
00.00–00.05 kg per week. That’s between 0–50g per week. That’s less than two ounces. Put it this way: if you were to quickly drink an espresso before stepping on the scale, the weight of your very tiny coffee would cover your fat loss.
The reviewers concluded:
❝CLA produces a modest loss in body fat in humans❞
Modest indeed!
See for yourself: Efficacy of conjugated linoleic acid for reducing fat mass: a meta-analysis in humans
But what about long-term? Well, as it happens (and as did show up in the non-human animal studies too, by the way) CLA works best for the first four weeks or so, and then effects taper off.
Another review of longer-term randomized clinical trials (in humans) found that over the course of a year, CLA-takers enjoyed on average a 1.33kg total weight loss benefit over placebo—so that’s the equivalent of about 25g (0.8 oz) per week. We’re talking less than a shot glass now.
They concluded:
❝The evidence from RCTs does not convincingly show that CLA intake generates any clinically relevant effects on body composition on the long term❞
A couple of other studies we’ll quickly mention before closing this section:
- CLA supplementation does not affect waist circumference in humans (at all).
- Amongst obese women doing aerobic exercise, CLA supplementation has no effect (at all) on body fat reduction compared to placebo
What does work?
You may remember this headline from our “What’s happening in the health world” section a few days ago:
Research reveals self-monitoring behaviors and tracking tools key to long-term weight loss success
On which note, we’ve mentioned before, we’ll mention again, and maybe one of these days we’ll do a main feature on it, there’s a psychology-based app/service “Noom” that’s very personalizable and helps you reach your own health goals, whatever they might be, in a manner consistent with any lifestyle considerations you might want to give it.
Curious to give it a go? Check it out at Noom.com (you can get the app there too, if you want)
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It’s On Me – by Dr. Sara Kuburic
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This isn’t about bootstrapping and nor is it a motivational pep talk. What it is, however, is a wake-up call for the wayward, and that doesn’t mean “disaffected youth” or such. Rather, therapist Dr. Sara Kuburic tackles the problem of self-loss.
It’s about when we get so caught up in what we need to do, should do, are expected to do, are in a rut of doing… That we forget to also live. After all, we only get one shot at life so far as we know, so we might as well live it in whatever way is right for us.
That probably doesn’t mean a life of going through the motions.
The writing style here is personal and direct, and it makes for quite compelling reading from start to finish.
Bottom line: if ever you find yourself errantly sleepwalking through life and would like to change that, this is a book for you.
Click here to check out It’s On Me, and take control of what’s yours!
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