How extreme heat can affect you—and how you can protect yourself
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Because of climate change, last summer was the hottest in the Northern Hemisphere in 2,000 years—and this summer is expected to be even hotter. The record may continue to be broken: Extreme heat is expected to become even more frequent.
The scorching heat has led to an increase in heat-related deaths in the United States, according to the Department of Health and Human Services, with approximately 2,300 deaths in the summer of 2023. Extreme heat, defined as a period of two to three days with high heat and humidity with temperatures above 90 degrees Fahrenheit, can have serious health consequences, including symptoms like headache, dizziness, loss of consciousness, nausea, and confusion.
As we face more extreme heat, you may be wondering how you can protect yourself and your loved ones. Read on to learn about heat-related illness, who’s most at risk, and more.
What happens when our bodies are exposed to extreme heat?
As our body temperature rises, our bodies attempt to cool down by opening up more blood vessels near the skin to begin sweating. The evaporation of our sweat regulates our body temperature, but it also leads to losing fluids and minerals.
When it’s too humid, sweating alone doesn’t do the trick. The heart must work harder to bring blood around the body. It starts beating faster, which can cause light-headedness, nausea, and headache.
This process can affect our health in different ways, including increasing our risk of hospitalization for heart disease, worsening asthma, and injuring kidneys due to dehydration. It can also result in heat-related illness. Below are some effects of heat on our bodies:
- Heat cramps: Occur when a person loses salt through sweating, which causes painful cramps. Symptoms begin as painful spasms after heavy sweating, usually in the legs or the stomach. Heat cramps can lead to heat exhaustion or heat stroke.
- Heat exhaustion: This occurs when the body loses an excessive amount of water and salt, usually during intense physical activity. Symptoms include irritability, heavy sweating, and weakness, including muscle cramps. Heat exhaustion can lead to heat stroke.
- Heat stroke: This is the most severe heat-related illness. It happens when the body can’t cool down and reaches a temperature of 106 Fahrenheit or higher within 10 to 15 minutes. If the person doesn’t receive emergency treatment, it can cause permanent disability or death. Symptoms include confusion, loss of consciousness, and seizures.
What should I do if someone experiences a heat-related illness?
If you or someone you’re with begins to show signs of heat illness, the Centers for Disease Control and Prevention recommends the following:
- Heat cramps: Stop all physical activity, drink water or a sports drink, move to a cool place, and wait for cramps to go away before resuming activity. If the cramps last more than an hour, you’re on a low-sodium diet, or you have heart problems, get medical help.
- Heat exhaustion: Move the person to a cool place, loosen their clothes, use a cool bath or cloths to try to lower their body temperature, and give them a sip of water. If the person throws up, or if their symptoms last longer than an hour or worsen, get medical help.
- Heat stroke: Call 911 immediately. Then, move the person to a cooler place, use cool cloths or a cool bath to help lower their temperature, and don’t give them anything to drink.
Read more about heat-related illness and what to do in each case.
Who’s more vulnerable to extreme heat?
While everyone can be affected by extreme heat, some people are more at risk, including people of color.
A 2023 KFF report outlined that because of historical residential segregation in the U.S. (known as “redlining”), people of color are more likely to live in areas that experience higher temperatures from rooftops, asphalt, and sidewalks that retain the sun’s heat (known as the “urban heat island effect”). Additionally, communities of color are more likely to live in areas with fewer trees, which act as a canopy and provide shade, making the heat worse and more direct.
Children under 5, adults 65 or over, and pregnant people are also more vulnerable to extreme heat. If you have a chronic health condition like diabetes, heart problems, or a mental health condition, you’re also at higher risk. (Some psychiatric medications, like antidepressants, can also make people more susceptible to heat).
Lastly, anyone exposed to the sun and extreme heat for long periods is also at higher risk. This includes athletes, people who work outdoors, and unhoused people.
What can I do to prevent heat-related illness during a heat wave?
During a heat wave, follow these tips to stay cool and protect yourself from heat-related illness:
- Never leave your pets or children inside a car.
- Wear loose, light-colored clothing (dark colors absorb more heat).
- Find shade if you’re outside.
- If you don’t have air conditioning in your home, go to a place where you can cool down, such as a local library, community center, local pool or splash pad, or mall. Check to see if your city has designated cooling centers. (Cities like New York have a list of places.)
- Wear a hat.
- Drink (non-alcoholic) fluids often to stay hydrated—and if you have pets, give them water frequently as well.
- Check on your family members or older neighbors who may be more sensitive to extreme heat.
- Avoid using your stove or oven too often or during the hottest parts of the day.
- Cover your windows with shades to keep the heat out.
What are some resources to prevent heat-related illness?
If you need financial assistance to cool down your home, such as to purchase an air conditioner, apply to the federal government’s Low Income Home Energy Assistance Program.
Before you head outside during a heat wave, use the CDC’s HeatRisk tool: Enter your zip code to find the current heat risk in your area and get tips on what to do to stay safe with each risk level.
During a heat wave, also look for a cooling center in your state using the National Center for Healthy Housing’s list.
Check out the National Weather Service’s for more tips and resources.
For more information, talk to your health care provider.
This article first appeared on Public Good News and is republished here under a Creative Commons license.
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Green Curry Salmon Burgers
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These lean and healthy burgers are as quick and easy to make as they are good for entertaining. The serving-bed has its nutritional secrets too! All in all, an especially heart-healthy and brain-healthy dish.
You will need
- 4 skinless salmon fillets, cubed (Vegetarian/Vegan? Consider this Plant-Based Salmon Recipe or, since they are getting blended, simply substitute 1½ cups cooked chickpeas instead with 1 tbsp tahini)
- 2 cloves garlic, chopped
- 2 tbsp thai green curry paste
- juice of two limes, plus wedges to serve
- 1 cup quinoa
- ½ cup edamame beans, thawed if they were frozen
- large bunch fresh cilantro (or parsley if you have the “soap “cilantro tastes like soap” gene), chopped
- extra virgin olive oil, for frying
- 1 tbsp chia seeds
- 1 tbsp nutritional yeast
- 2 tsp black pepper, coarse ground
Method
(we suggest you read everything at least once before doing anything)
1) Put the salmon, garlic, curry paste, nutritional yeast, and half the lime juice into a food processor, and blend until smooth.
2) Remove, divide into four parts, and shape into burger patty shapes. Put them in the fridge where they can firm up while we do the next bit.
3) Cook the quinoa with the tablespoon of chia seeds added (which means boiling water and then letting it simmer for 10–15 minutes; when the quinoa is tender and unfurled a little, it’s done).
4) Drain the quinoa with a sieve, and stir in the edamame beans, the rest of the lime juice, the cilantro, and the black pepper. Set aside.
5) Using the olive oil, fry the salmon burgers for about 5 minutes on each side.
6) Serve; we recommend putting the burgers atop the rest, and adding a dash of lime at the table.
(it can also be served this way!)
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Farmed Fish vs Wild–Caught
- Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
- What Omega-3 Fatty Acids Really Do For Us
- If You’re Not Taking Chia, You’re Missing Out
- Our Top 5 Spices: How Much Is Enough For Benefits?
Take care!
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Stretching for 50+ – by Dr. Karl Knopf
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Dr. Knopf explores in this book the two-way relationship between aging and stretching (i.e., each can have a large impact on the other). Thinking about stretching in those terms is an important reframe for going into any stretching program. We’d say “after the age of 50”, but honestly, at any age. But this book is written with over-50s in mind, as the title goes.
There’s an extensive encyclopedic section on stretches per body part, which is exactly as you might expect from any book of this kind. There is also a flexibility self-assessment, so that progress can be measured easily, and so that the reader knows where might need more improvement.
Perhaps this book’s greatest strength is the section on specialized programs based on things ranging from working to improve symptoms of any chronic conditions you may have (or at least working around them, if outright improvement is not possible by stretching), to your recreational activities of importance to you—so, what kinds of flexibilities will be important to you, and also, what kinds of injury you are most likely to need to avoid.
Bottom line: if you’re 50 and would like to do more stretching and less aging, then this book can help with that.
Click here to check out Stretching for 50+, and extend your healthspan!
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Unwell Women – by Dr. Elinor Cleghorn
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For a demographic that makes up a little over half of the world’s population, women are paradoxically marginalized in healthcare. And in other ways too, but this book is about health.
Dr. Cleghorn had to fight for seven (!) years to get her own lupus condition recognized as such, and continues to have to fight for it to be taken seriously on an ongoing basis. And yet, 95% of the book is not about her and her experiences, but rather, the bigger picture.
The book is divided into sections, by period in history. From Hippocrates to the modern day, Dr. Cleghorn gives us a well-researched, incredibly well-referenced overview of the marginalization of women’s health. Far from being a dry history book in the early parts though, it’s fascinating and engaging throughout.
The modern day sections are part shining a light into dark areas, part practical information-and-advice “did you know this happens, and you can do this about it”, and part emphatic call-to-action to demand better.
Bottom line: this book is in this reviewer’s “top 5 books read this year”, and we highly recommend it to you.
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Overdone It? How To Speed Up Recovery After Exercise
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How To Speed Up Recovery After A Workout (According To Actual Science)
Has your enthusiasm ever been greater than your ability, when it comes to exercise?
Perhaps you leapt excitedly into a new kind of exercise, or maybe you made a reprise of something you used to do, and found out the hard way you’re not in the same condition you used to be?
If you’ve ever done an exercise session and then spent the next three days recovering, this one’s for you. And if you’ve never done that? Well, prevention is better than cure!
Post-exercise stretching probably won’t do much to help
If you like to stretch after a workout, great, don’t let us stop you. Stretching is, generally speaking, good.
But: don’t rely on it to hasten recovery. Here’s what scientists Afonso et al. had to say recently, after doing a big review of a lot of available data:
❝There wasn’t sufficient statistical evidence to reject the null hypothesis that stretching and passive recovery have equivalent influence on recovery.
Data is scarce, heterogeneous, and confidence in cumulative evidence is very low. Future research should address the limitations highlighted in our review, to allow for more informed recommendations.
For now, evidence-based recommendations on whether post-exercise stretching should be applied for the purposes of recovery should be avoided, as the (insufficient) data that is available does not support related claims.❞
…and breath! What a title.
Hot and Cold
Contrast bath therapy (alternating hot and cold, which notwithstanding the name, can also be done in a shower) can help reduce muscle soreness after workout, because of how the change in temperature stimulates vasodilation and vasoconstriction, reducing inflammation while speeding up healing:
Contrast Water Therapy and Exercise Induced Muscle Damage: A Systematic Review and Meta-Analysis
If doing this in the shower isn’t practical for you, and you (like most people) have only one bathtub, then cold is the way to go for the most evidence-based benefits:
Whole-Body Cryotherapy in Athletes: From Therapy to Stimulation. An Updated Review of the Literature
Eat protein whenever, carbs after
Eating protein before a workout can boost muscle protein synthesis. Be aware that even if you’re not bodybuilding, your body will still need to do cell replacement and repair, including in any muscle tissue that got damaged* during the workout
If you don’t like eating before a workout, eating protein after is fine too:
Pre- versus post-exercise protein intake has similar effects on muscular adaptations
*Note: muscle tissue is supposed to get damaged (slightly!) during many kinds of workout.
From lactic acid (that “burn” you feel when exercising) to microtears, the body’s post-workout job is to make the muscle stronger than before, and to do that, it needs you to have found the weak spots for it.
That’s what exercise-to-exhaustion does.
Eating carbs after a workout helps replace lost muscle glycogen.
For a lot more details on optimal nutrition timing in the context of exercise (carbs, proteins, micronutrients, different kinds of exercise, etc), check out this very clear guide:
International society of sports nutrition position stand: nutrient timing
Alcohol is not the post-workout carb you want
Shocking, right? But of course, it’s very common for casual sportspeople to hit the bar for a social drink after their activity of choice.
However, consuming alcohol after exercise doesn’t merely fail to help, it actively inhibits glycogen replacement and protein synthesis:
Also, if you’re tempted to take alcohol “to relax”, please be aware that alcohol only feels relaxing because of what it does to the brain; to the rest of the body, it is anything but, and also raises blood pressure and cortisol levels.
As to what to drink instead…
Hydrate, and consider creatine and tart cherry supplementation
Hydration is a no-brainer, but when you’re dehydrated, it’s easy to forget!
Creatine is a very well-studied supplement, that helps recovery from intense exercise:
Tart cherry juice has been found to reduce muscle damage, soreness, and inflammation after exercise:
Wondering where you can get tart cherry powder? We don’t sell it (or anything else), but here’s an example product on Amazon.
And of course, actually rest
That includes good sleep, please. Otherwise…
Effects of Sleep Deprivation on Acute Skeletal Muscle Recovery after Exercise
Rest well!
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Too Much Or Too Little Testosterone?
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One Man’s Saw Palmetto Is Another Woman’s Serenoa Repens…
Today we’re going to look at saw palmetto. So, first:
What is it?
Saw palmetto is a type of palm native to the southeastern United States. Its scientific name is “Serenoa repens”, so if that name appears in studies we cite, it’s the same thing. By whichever name, it’s widely enjoyed as a herbal supplement.
Why do people take it?
Here’s where it gets interesting, because people take it for some completely opposite reasons…
Indeed, searching for it on the Internet will cause Google to suggest “…for men” and “…for women” as the top suggestions.
That’s because it works on testosterone, and testosterone can be a bit of a double-edged sword, so some people want to increase or decrease certain testosterone-related effects on their body.
And it works for both! Here be science:
- Testosterone (henceforth, “T”) is produced in the human body.
- Yes, all human bodies, to some extent.
- An enzyme called 5-alpha-reductase converts T in to DHT (dihydrogen testosterone)
- DHT is a much more potent androgen (masculinizing agent) than T alone, such that its effects are often unwanted, including:
- Enlarged prostate (if you have one)
- Hair loss (especially in men)
- New facial hair growth (usually unwanted by women)
- Women are more likely to get this due to PCOS and/or the menopause
To avoid those effects, you really want less of your T to be converted into DHT.
Saw palmetto is a 5α-reductase inhibitor, so if you take it, you’ll have less DHT, and you’ll consequently lose less hair, have fewer prostate problems, etc.
^The above study showed that saw palmetto extract performed comparably to finasteride. Finasteride is the world’s main go-to prescription drug for treating enlarged prostate and/or hair loss.
See also: Natural Hair Supplement: Friend or Foe? Saw Palmetto, a Systematic Review in Alopecia
Hair today… Growing tomorrow!
So, what was that about increasing T levels?
Men usually suffer declining T levels as they get older, with a marked drop around the age of 45. With lower T comes lower energy, lower mood, lower libido, erectile dysfunction, etc.
Guess what… It’s T that’s needed for those things, not DHT. So if you block the conversion of T to DHT, you’ll have higher blood serum T levels, higher energy, higher mood, higher libido, and all that.
(the above assumes you have testicles, without which, your T levels will certainly not increase)
Saw Palmetto Against Enlarged Prostate?
With higher DHT levels in mid-late life, prostate enlargement (benign prostatic hyperlasia) can become a problem for many men. The size of that problem ranges from urinary inconvenience (common, when the prostate presses against the bladder) to prostate cancer (less common, much more serious). Saw palmetto, like other 5α-reductase inhibitors such as finasteride, may be used to prevent or treat this.
Wondering how safe/reliable it is? We found a very high-quality fifteen-year longitudinal observational study of the use of saw palmetto, and it found:
❝The 15 years’ study results suggest that taking S. repens plant extract continuously at a daily dose of 320 mg is an effective and safe way to prevent the progression of benign prostatic hyperplasia.❞
Want a second opinion? We also found a 10-year study (by different researchers with different people taking it), which reached the same conclusion:
❝The results of study showed the absence of progression, both on subjective criteria (IPSS, and QoL scores), and objective criteria (prostate volume, the rate of urination, residual urine volume). Furthermore, patients had no undesirable effects directly related to the use of this drug.❞
- IPSS = International Prostate Symptom Score
- QoL = Quality of Life
❝But wait a minute; I, a man over the age of 45 with potentially declining T levels but a fabulous beard, remember that you said just a minute ago that saw palmetto is used by women to avoid having facial hair; I don’t want to lose mine!❞
You won’t. Once your facial hair follicles were fully developed and activated during puberty, they’ll carry on doing what they do for life. That’s no longer regulated by hormones once they’re up and running.
The use of saw palmetto can only be used to limit facial hair if caught early—so it’s more useful at the onset of menopause, for those who have (or will have) such, or else upon the arrival of PCOS symptoms or hirsuitism from some other cause.
Take The Test!
Do you have a prostate, and would like to know your IPSS score, and what that means for your prostate health?
(takes 1 minute, no need to pee or go probing for anything)
Bottom Line on Saw Palmetto
- It blocks the conversion of T into DHT
- It will increase blood serum T levels, thus boosting mood, energy, libido, etc in men (who typically have more T, but whose T levels decline with age)
- It will decrease DHT levels, thus limiting hair loss (especially in men) and later-life new facial hair growth (especially in women).
- It can be used to prevent or treat prostate enlargement
- Bonus: it’s a potent antioxidant and thus reduces general inflammation (in everyone)
Want To Try Saw Palmetto?
We don’t sell it (or anything else), but for your convenience…
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- Testosterone (henceforth, “T”) is produced in the human body.
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Marrakesh Sorghum Salad
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
As the name suggests, it’s a Maghreb dish today! Using sorghum, a naturally gluten-free whole grain with a stack of vitamins and minerals. This salad also comes with fruit and nuts (apricots and almonds; a heavenly combination for both taste and nutrients) as well as greens, herbs, and spices.
Note: to keep things simple today, we’ve listed ras el-hanout as one ingredient. If you’re unfamiliar, it’s a spice blend; you can probably buy a version locally, but you might as well know how to make it yourself—so here’s our recipe for that!
You will need
- 1½ cups sorghum, soaked overnight in water (if you can’t find it locally, you can order it online (here’s an example product on Amazon), or substitute quinoa) and if you have time, soaked overnight and then kept in a jar with just a little moisture for a few days until they begin to sprout—this will be best of all. But if you don’t have time, don’t worry about it; overnight soaking is sufficient already.
- 1 carrot, grated
- ½ cup chopped parsley
- 1 tbsp apple cider vinegar
- ½ tbsp chopped chives
- 2 tbsp ras el-hanout
- 3 cloves garlic, crushed
- 2 tbsp almond butter
- 1 tbsp lemon juice
- 1 tsp white miso paste
- ½ cup sliced almonds
- 4 fresh apricots, pitted and cut into wedges
- 1 cup mint leaves, chopped
- To serve: your choice of salad greens; we suggest chopped romaine lettuce and rocket
Method
(we suggest you read everything at least once before doing anything)
1) Cook the sorghum, which means boiling it for about 45 minutes, or 30 in a pressure cooker. If unsure, err on the side of cooking longer—even up to an hour will be totally fine. You have a lot of wiggle room, and will soon get used to how long it takes with your device/setup. Drain the cooked sorghum, and set it aside to cool. If you’re entertaining, we recommend doing this part the day before and keeping it in the fridge.
2) When it’s cool, add the carrot, the parsley, the chives, the vinegar, and 1 tbsp of the ras el-hanout. Toss gently but thoroughly to combine.
3) Make the dressing, which means putting ¼ cup water into a blender with the other 1 tbsp of the ras el-hanout, the garlic, the almond butter, the lemon juice, and the miso paste. Blend until smooth.
4) Assemble the salad, which means adding the dressing to sorghum-and-ingredients bowl, along with the almonds, apricots, and mint leaves. Toss gently, but sufficiently that everything is coated.
5) Serve on a bed of salad greens.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Four Ways To Upgrade The Mediterranean Diet ← including an anti-inflammatory version, which is functionally what we’re doing today. As an aside when people hear “Mediterranean” they often think “Italy and Greece”. Which, sure, but N. Africa (and thus Maghreb cuisine) is also very much Mediterranean, and it shows!
- Our Top 5 Spices: How Much Is Enough For Benefits?
- Why You Should Diversify Your Nuts!
- Brain Food? The Eyes Have It!
Take care!
Don’t Forget…
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