The Medicinal Properties Of Bay Leaves
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The humble bay leaf has more uses than just culinary!
How about for hair growth?
Popularly recommended on social media with the promise of long and glowing hair… Guess how many scientific studies back up this claim!
If you guessed zero, you guessed correctly. At least, we were not able to find any. In fact, the only paper on the entirety of PubMed (a large online database of available scientific literature from most, if not all, reputable scientific journals) to return a hit for the search string “bay leaf hair growth” was this one:
You may notice that that has nothing to do with hair growth, and rather returned the hit because the acne bacteria are known to “proliferate within sebum-blocked skin hair follicles”.
So let’s talk about that instead:
Against acne & skin inflammation
Well, for that, it works! The research that we mentioned above concluded that:
❝LNE significantly suppressed the expression of P. acnes-mediated proinflammatory cytokines, such as IL-1β, IL-6, and NLRP3. We also found that LNE inhibited the inflammatory transcription factor NF-κB in response to P. acnes. In addition, eucalyptol, which is the main constituent of LNE, consistently inhibited P. acnes-induced inflammatory signaling pathways. Moreover, LNE significantly ameliorated P. acnes-induced inflammation in a mouse model of acne. We suggest for the first time that LNE hold therapeutic value for the improvement of P. acnes-induced skin inflammation.❞
LNE = Laurus nobilis extract, i.e. bay leaf extract
Now, that’s all about acne-induced skin inflammation, but what about other kinds?
Against inflammation in general
Bay leaves have an abundance of antioxidant polyphenols, and what’s good against oxidation is good against inflammation. For example:
Laurus nobilis leaf extract controls inflammation by suppressing NLRP3 inflammasome activation
That anti-inflammatory action is more than skin-deep though, because…
Against IBD / ulcerative colitis
It’s good for the gut, too, for example in this study (with mice, but the bacteria affected are the same as we have), which found:
❝…bay leaves showed the best treatment effects on gut microbiota compositions; promoting the growth of Bifidobacteria and Lactobacillus in addition to producing high butyric acid levels. Meanwhile, the number of Clostridium and sulfate-reducing bacteria was significantly reduced. Conclusively, consuming bay leaves brought significant colon health benefits other than stimulating appetite for a better taste.❞
Note that all of those gut-related changes are beneficial to us, increasing things that are best increased, and reducing things that are best reduced.
Against diabetes
It’s good for the blood—and for the heart, but more on that later. First, about diabetes:
❝All three levels of bay leaves reduced serum glucose with significant decreases ranging from 21 to 26% after 30 d.
Total cholesterol decreased, 20 to 24%, after 30 days with larger decreases in low density lipoprotein (LDL) cholesterol of 32 to 40%. High density lipoprotein (HDL) cholesterol increased 29 and 20% in the groups receiving 1 and 2 g of bay leaves, respectively. Triglycerides also decreased 34 and 25% in groups consuming 1 and 2 g of bay leaves, respectively, after 30 d. There were no significant changes in the placebo group.
In summary, this study demonstrates that consumption of bay leaves, 1 to 3 g/d for 30 days, decreases risk factors for diabetes and cardiovascular diseases and suggests that bay leaves may be beneficial for people with type 2 diabetes.❞
Again, all those changes are good:
Bay Leaves Improve Glucose and Lipid Profile of People with Type 2 Diabetes
Good for the heart
This one’s quite straight forward. Bay leaf tea is indeed good for the heart,
- Literally: Evaluation of Daily Laurus nobilis Tea Consumption on Lipid Profile Biomarkers in Healthy Volunteers
- Metaphorically: Evaluation of daily Laurus nobilis tea consumption on anxiety and stress biomarkers in healthy volunteers
Of course, even that latter is also good for the heart literally, just, indirectly, by reducing anxiety and stress, thus indirectly benefiting the heart itself.
But even before that, it’s already very directly beneficial to cardiovascular health, per its significant improvements to the lipid profile.
Anything else?
So much else, but there’s only so much we can feature in one day, so if you’d like to learn more, we recommend this very comprehensive paper:
…which discusses many benefits in considerable detail, including…
❝The LN leaves have various biological activities, such as antioxidant, wound healing, antibacterial, analgesic, and anti-inflammatory activities. However, oxidative stress, cancer, diabetes, microbial infections, and inflammatory diseases are closely linked. The objective of this research is to characterize Laurus nobilis (LN) aromatic oil (AO) and evaluate its antioxidant, antidiabetic, antiobesity, antimicrobial, and antimutagenic bioactivities.
The plant AO showed potent antioxidant activity (IC50 = 2.2 ± 1.38) and has moderate anti-amylase (IC50 = 60.25 ± 1.25), anti-glucosidase (IC50 = 131.82 ± 0.1), and antilipase (IC50 = 83.17 ± 0.06) activities.
Moreover, LNAO showed potent antimicrobial activity against Staphylococcus aureus, Escherichia coli, Klebsiella pneumonia, Proteus vulgaris (MICs = 1.56 µg/mL), methicillin-resistant Staphylococcus aureus (MRSA) (MIC = 3.125 µg/mL) and Candida albicans (MIC = 0.195 µg/mL). The cytotoxicity results demonstrated that at a concentration of 1 mg/mL, LNAO has potent breast cancer (MCF-7), and hepatocellular carcinoma (Hep 3B) cancer cells inhibitory activities of 98% and 95%, respectively.
Importantly, we are the first to show that LNAO significantly hinders hepatocellular carcinoma spheroids’ formation capacity in a 3D model.
These results show that LNAO is a promising natural source with powerful antioxidant, antidiabetic, anticancer, and antimicrobial activities that could be exploited in the future to treat a variety of diseases.❞
Want to try some?
We don’t sell it, but you can buy leaves from your local supermarket and make bay leaf tea, or alternatively, if you prefer essential oil form, here for your convenience is an example product on Amazon 😎
Enjoy!
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Sweet Potato vs Cassava – Which is Healthier?
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Our Verdict
When comparing sweet potato to cassava, we picked the sweet potato.
Why?
For any unfamiliar with cassava, it’s also called manioc or yuca/yucca, and it’s a tuber that can be used a lot like sweet potato. It’s popular in S. America, often in recipes that aren’t the healthiest (deep-fried chunky “cassava chips” are popular in Brazil, for example, and farofa, a flour made from cassava, is less healthy even than refined white flour from wheat), but today we’re going to judge it on its own merit—since after all, almost anything can be deep-fried and many things can be turned into flour, but it doesn’t mean we have to do that.
Let’s talk macros first: sweet potato has nearly 2x the protein, while cassava has nearly 2x the carbs. As for fiber to soften those carbs’ impact on our blood sugars, well, sweet potato has about 2x the fiber. All in all for macros, a clear and easy win for sweet potato.
Important note: as for the impact that has on glycemic index: the exact glycemic index will depend on what you do with it (different cooking methods change the GI), but broadly speaking, sweet potatoes are considered a medium GI food, while cassava is a very high GI food, to the point that it’s higher than sucrose, and nearly equal to pure glucose. Which is impressive, for a tuber.
In terms of vitamins, sweet potato’s famously high vitamin A content raises the bar, but it’s not all it has to offer: sweet potato has more of vitamins A, B1, B2, B3, B5, B6, E, and K, while cassava has more of vitamins B9 and choline. Just for amusement’s sake, let’s note that the sweet potato has over 1,478x the vitamin A content. In any case, the vitamins category is another clear win for sweet potato.
When it comes to minerals, it’s again quite one-sided: sweet potato has more calcium, copper, iron, magnesium, manganese, phosphorus, and potassium, while cassava has more selenium. So, sweet potato wins yet again.
In short: definitely a case of “the less widely-available option is not necessarily the healthier”!
Want to learn more?
You might like to read:
Glycemic Index vs Glycemic Load vs Insulin Index
Take care!
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Blue Light At Night? Save More Than Just Your Sleep!
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Beating The Insomnia Blues
You previously asked us about recipes for insomnia (or rather, recipes/foods to help with easing insomnia). We delivered!
But we also semi-promised we’d cover a bit more of the general management of insomnia, because while diet’s important, it’s not everything.
Sleep Hygiene
Alright, you probably know this first bit, but we’d be remiss if we didn’t cover it before moving on:
- No caffeine or alcohol before bed
- Ideally: none earlier either, but if you enjoy one or the other or both, we realize an article about sleep hygiene isn’t going to be what changes your mind
- Fresh bedding
- At the very least, fresh pillowcase(s). While washing and drying an entire bedding set constantly may be arduous and wasteful of resources, it never hurts to throw your latest pillowcase(s) in with each load of laundry you happen to do.
- Warm bed, cool room = maximum coziness
- Dark room. Speaking of which…
About That Darkness…
When we say the room should be dark, we really mean it:
- Not dark like “evening mood lighting”, but actually dark.
- Not dark like “in the pale moonlight”, but actually dark.
- Not dark like “apart from the light peeking under the doorway”, but actually dark.
- Not dark like “apart from a few LEDs on electronic devices that are on standby or are charging”, but actually dark.
There are many studies about the impact of blue light on sleep, but here’s one as an example.
If blue light with wavelength between 415 nm and 455 nm (in the visible spectrum) hits the retina, melatonin (the sleep hormone) will be suppressed.
The extent of the suppression is proportional to the amount of blue light. This means that there is a difference between starting at an “artificial daylight” lamp, and having the blue LED of your phone charger showing… but the effect is cumulative.
And it gets worse:
❝This high energy blue light passes through the cornea and lens to the retina causing diseases such as dry eye, cataract, age-related macular degeneration, even stimulating the brain, inhibiting melatonin secretion, and enhancing adrenocortical hormone production, which will destroy the hormonal balance and directly affect sleep quality.❞
Read it in full: Research progress about the effect and prevention of blue light on eyes
See also: Age-related maculopathy and the impact of blue light hazard
So, what this means, if we value our health, is:
- Switch off, or if that’s impractical, cover the lights of electronic devices. This might be as simple as placing your phone face-down rather than face-up, for instance.
- Invest in blackout blinds/curtains (per your preference). Serious ones, like these ← see how they don’t have to be black to be blackout! You don’t have to sacrifice style for function
- If you can’t reasonably do the above, consider a sleep mask. Again, a good one. Not the kind you were given on a flight, or got free with some fluffy handcuffs. We mean a full-blackout sleep mask that’s designed to be comfortable enough to sleep in, like this one.
- If you need to get up to pee or whatever, do like a pirate and keep one eye covered/closed. That way, it’ll remain unaffected by the light. Pirates did it to retain their night vision when switching between being on-deck or below, but you can do it to halve the loss of melatonin.
Lights-Out For Your Brain Too
You can have all the darkness in the world and still not sleep if your mind is racing thinking about:
- your recent day
- your next day
- that conversation you wish had gone differently
- what you really should have done when you were 18
- how you would go about fixing your country’s socio-political and economic woes if you were in charge
- Etc.
We wrote about how to hit pause on all that, in a previous edition of 10almonds.
Check it out: The Off-Button For Your Brain—How to “just say no” to your racing mind (this trick really works)
Sweet dreams!
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Sensitive – by Jenn Granneman and Andre Sólo
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This book is written for what is called the “Highly Sensitive Person”, which makes it sound like a very rare snowflake condition, when in fact the diagnostic criteria (discussed early in the book) yield a population bell curve of 30:40:30, whereupon 30% are in the band of “high sensitivity”, 40% “normal sensitivity” and the remainder “low sensitivity”. You may note that “high” and “low” together outnumber “normal”, but statistics is like that.
So, if you’re one of the approximately one in three people who fall into the higher category, and/or you have a loved one who is in that category, then this book looks at the many advantages to a commonly stigmatized and (by cruel irony) criticized personality trait.
Those advantages range from personal life to work and even public life (yes, really), and can be grown, positively highlighted, used, and enjoyed.
In the category of criticism, the book does not usefully cover the benefit of psychological resilience. Resilience does not mean losing sensitivity, just, being able to also dry one’s tears and weather life’s slings and arrows when the world is harsher than one might like. But for the authors, they have stacked all their chips on “we must make the world a better place”. Which is a noble goal, if not always an immediately attainable one.
Bottom line: if you are more sensitive than average and would like to use that to benefit yourself and those around you, then this is the book for you!
Click here to check out Sensitive, and make the most of your strengths!
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How To Escape From A Despairing Mood
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When we are in a despairing mood, that’s when it can feel hardest to actually implement anything we know about getting out of one. That’s why sometimes, the simplest solutions are the best:
Imagination Is Key
Despairing moods occur when it’s hard to envision a better life. Imagination is the power to envision alternatives, such as new jobs, relationships, or lifestyle, but sadness can cloud our ability to imagine solutions like changing careers, moving house, or starting fresh. With enough imagination, most problems can be worked around—and new opportunities can always be found.
Importantly: we are not bound by our past or present circumstances; we have the freedom and flexibility to choose new paths. That doesn’t mean it’ll always be a walk in the park, but “this too shall pass”.
You may be thinking: “sometimes the hardship does pass, but can last many years”, and that is true. All the more reason to check if there’s a freer lane you can slip into to speed ahead. Even if there isn’t, the mere act of imagining such lanes is already respite from the hardships—and having envisioned such will make it much easier for you to recognise when opportunities for change do come along.
To foster imagination, we are advised to expose ourselves to different narratives, preparing ourselves for alternative ways of living. Thus, we can reframe life’s challenges as intellectual puzzles, urging us to rebuild creatively and find new solutions!
For more on all this, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Behavioral Activation Against Depression & Anxiety
Take care!
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Carrots vs Parsnips – Which is Healthier?
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Our Verdict
When comparing carrots to parsnips, we picked the parsnips.
Why?
There are arguments for both! But we say parsnips win on overall nutritional density.
In terms of macros, parsnips vary quite a lot from region to another, but broadly speaking, parsnips have more carbs and fiber, and/but the ratios are such that carrots have the lower glycemic index. We’ll call this one a win for carrots.
When it comes to vitamins, carrots have more of vitamins A, B2, B3, B6, and choline, while parsnips have more of vitamins B1, B5, B9, C, E, and K. A small win for parsnips here.
In the category of minerals, carrots are not higher in any minerals, while parsnips are higher in calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc. An overwhelming win for parsnips.
While the overall vitamin and mineral content puts parsnips ahead, it’s still worth noting that carrots have highly bioavailable megadoses of vitamin A.
Another thing to note is that the glycemic index recorded for both is when peeled and boiled, whereas both of these root vegetables can be enjoyed raw if you wish, which has a much lower GI.
In short, enjoy either or both, but parsnips are the more nutritionally dense overall.
Want to learn more?
You might like to read:
Glycemic Index vs Glycemic Load vs Insulin Index
Take care!
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Dopamine Nation – by Dr. Anna Lembke
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We live in an age of abundance, though it often doesn’t feel like it. Some of that is due to artificial scarcity, but a lot of it is due to effectively whiting out our dopamine circuitry through chronic overuse.
Psychiatrist Dr. Anna Lembke explores the neurophysiology of pleasure and pain, and how each can (and does) lead to the other. Is the answer to lead a life of extreme neutrality? Not quite.
Rather, simply by being more mindful of how we seek each (yes, both pleasure and pain), we can leverage our neurophysiology to live a better, healthier life—and break/avoid compulsive habits, while we’re at it.
That said, the book itself is quite compelling reading, but as Dr. Lembke shows us, that certainly doesn’t have to be a bad thing.
Bottom line: if you sometimes find yourself restlessly cycling through the same few apps (or TV channels) looking for dopamine that you’re not going to find there, this is the book for you.
Click here to check out Dopamine Nation, and get a handle on yours!
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