Advertising
Advertising

15 Surprising and Science-Backed Health Effects of Dark Chocolate

15 Surprising and Science-Backed Health Effects of Dark Chocolate

You have probably heard others talk about the benefits of eating foods packed with nutrients and antioxidants as a way to promote overall health. I would be willing to bet that chocolate, and more specifically dark chocolate, has come up in these conversations. While it seems almost too good to be true, the health benefits to eating a moderate amount of dark chocolate are backed by science. So rest assured, this is one instance where you can have your cake (or in this case, dark chocolate) and eat it too.

1. For centuries, dark chocolate has been long been associated with health benefits

Incas referred to a beverage made from cocoa as “the drink of the gods”, which eventually gave rise to its scientific name Theobroma cacoa, derived from the Greek words theo (god) and broma (drink). Aztec Emperor Montezuma stated that cocoa “builds up resistance and fights fatigue” and can “permit a man to walk for a whole day without food”.

2. Dark chocolate is rich in a class of phytonutrients called flavonoids

Flavonoids are one of the most common and largest groups of phytonutrients found in the diet. These phytonutrients are chemicals found in plants that promote health To date more than 4,000 varieties have been identified. Dark chocolate and cocoa contain specific flavonoids called flavan-3-ols (or flavanols).

3. Dark chocolate is chock(olate) full of other nutrients

A small bar of 70-85% dark chocolate, let’s say 50 grams/1.75 ounces, contains

Advertising

  • nearly 6 grams of fiber for digestive health
  • a third of your recommended daily allowance (RDA) for iron to promote cardiovascular fitness
  • over a quarter of your RDA for magnesium for skeletal health
  • nearly 50% of your RDA for copper and manganese, important for antioxidant functions

It is also important to note, that a serving of dark chocolate contains 300 calories, so it is best to consume dark chocolate in moderation. And don’t worry! You can still get these healthy effects from smaller servings; just try to make sure you are eating dark chocolate that 70-90% cocoa.

4. Flavan-3-ols/flavonols in dark chocolate lower blood pressure

Research has shown that after consumption of dark chocolate, antioxidant capacity in blood increased, which led to the opening of blood vessels and decreased blood pressure.

5. Dark chocolate decreases “bad” cholesterol and increases “good” cholesterol levels

You may have heard LDL, HDL, or VLDL. But what does this alphabet soup mean to your cholesterol and overall health? Briefly, cholesterol is made up low-density lipoprotein (LDL), high-density lipoprotein (HDL) and very low-density lipoprotein (VLDL). LDL is considered the “bad” cholesterol that can build up on the walls of arteries, while “HDL” is called the good cholesterol, which can block LDL from building up on arteries. A variety of studies have shown that both dark chocolate and cocoa powder reduced LDL and oxidized LDL levels and increased HDL levels.

6. Dark chocolate reduces platelet aggregation

Platelets are components found in blood cells that help to form clots. While clots are critical in stopping excessive bleeding, hyperactive platelets can contribute to coronary heart disease. A study investigating the effects of white, milk, or dark chocolate showed that dark chocolate inhibited platelet accumulation, while white and milk chocolate had no effect on platelet clustering.

Advertising

7. Risk for cardiovascular disease is slashed by dark chocolate

Points #4-6 may be all well and good, but does dark chocolate broadly impact hearth health? Turns out, it does. A study researching the long-term diet habits in nearly 500 elderly men revealed that cocoa intake was inversely correlated with cardiovascular disease and mortality rates that were assessed 15 years after the study began. Another epidemiological study in the US general population demonstrated that consumption of chocolate was inversely related to coronary heart disease and that eating chocolate 5 times per week lowered the coronary heart disease risk by 57%. So go ahead and enjoy a daily piece of dark chocolate.

8. Moderate dark chocolate consumption lowers the risk for stroke

What about stroke? An analysis of five different studies demonstrated a nearly 20% stroke risk reduction when comparing those defined as high consumers (~ 62.9 grams/week or a tenth of a pound for our non-metric friends out there) to those defined as low consumers of dark chocolate (~ 0 grams/week).

9. Insulin blood sugar spikes are reduced by dark chocolate

Unfortunately, diabetes is a growing concern in the United States, so wouldn’t it be great if dark chocolate could mitigate rates of diabetes? An analysis over 40 clinical trials, including nearly 1300 participants, found that nutritional interventions with cocoa or chocolate significantly reduced fasting insulin concentrations and insulin resistance, endpoints which are used to assess risk for the development of diabetes and cardiovascular disease. Again, moderation is key here and the distinction between cocoa/dark chocolate and milk/white chocolate is critical since milk/white chocolate have lower levels of healthful components.

10. Flavanols stimulate blood flow to the brain

A 450 milligram dose (about 1/6 of a teaspoon) of cocoa flavanols increased cerebral blood flow to gray matter in the brain. Additionally, a five day regimen of 150 milligrams of cocoa flavanols increased blood oxygenation levels. But does blood flow translate into smarts? I’m so glad you asked, see the next point.

Advertising

11. Increasing intake of cocoa can improve cognitive function

A study in 90 elderly participants investigated the effects of a high (~990 milligrams), intermediate (~520 milligrams), or low (~45 milligrams) cocoa flavanol doses. Researchers found that participants on the high flavanol track were able to complete cognitive tests much faster and scored better on verbal fluency test scores in comparison to those assigned to low flavanol supplementation. So you are telling me that dark chocolate could make me smarter? Sweet.

12. Dark chocolate reduces stress

This list just gets better and better. Personally, I feel like a weight has been lifted off my chest and this next point only helps this feeling. Preliminary studies demonstrate that dark chocolate consumption reduced excretion of cortisol and catecholamines, hormones involved in the body’s stress response. Additionally, other researchers have shown that consumption of dark chocolate buffered stress responses and reduced levels of perceived stress as assessed through a stress questionnaire. Now it makes even more sense to keep a bar of dark chocolate at work.

13. Dark chocolate boosts energy

I am always looking for an alternative pick me up to my traditional afternoon cup of coffee. Dark chocolate contains a small amount of caffeine to help give you a boost during the mid-afternoon slump.

14. Flavanols from dark chocolate can protect the skin

Just in time for summer! Consumption of flavanol rich chocolate protects against UV rays by increasing the minimum amount of UV rays required to cause skin redness. Moreover, flavanols from cocoa improve blood flow to the skin and increases skin hydration and thickness.

Advertising

15. Dark chocolate can improve teeth health

Sparkle up that smile. Dark chocolate is rich in the antioxidant theobromine, which has been shown to protect the enamel surfaces of teeth. Additionally, this potent antioxidant is better than fluoride at remineralizing and hardening tooth enamel. Knowing these facts only makes me smile more.

As you can see, the health effects of dark chocolate are supported by science and exhibit how dark chocolate and cocoa broadly promote health. Even though I am a dark chocolate lover already, reading over this list has only further convinced me to pick up another bar the next time I am grocery shopping to enjoy this treat (in moderation)!

More by this author

5 Things That Will Happen When You Eat Oatmeal This Is What Will Happen When You Eat Avocados Every Day Calorie Confusion: How Much Is Needed During Pregnancy? Go with Your Gut: The Science Behind Your Gut Bacteria Red Meat for Health: A Recent WHO/IARC Ruling

Trending in Health

1 Weight Loss Plan And Program: Create Your Own One 2 4 Simple Desk-Based Stretches for Effective Lower Back Pain Relief 3 Why You Should Go For Vitamin D But Not Vitamin C To Prevent The Cold 4 Reasons of Insomnia and How to Combat It (The Complete Guide) 5 Why You’re Feeling Tired All the Time (And What to Do About It)

Read Next

Advertising
Advertising
Advertising

Last Updated on March 30, 2020

Why You’re Feeling Tired All the Time (And What to Do About It)

Why You’re Feeling Tired All the Time (And What to Do About It)

Feeling tired all the time?

Have you ever caught yourself nodding off when you’re watching TV, listening to someone drone on during a meeting or even driving a car?

I know I have, especially when I worked 70 hours per week as a High-Tech Executive.

Feeling tired all the time may be more widespread than you think. In fact, two-fifths of Americans are tired most of the week.[1]

If you’re tired of feeling tired, then I’ve got some great news for you. New research is helping us gain critical insights into the underlying causes of feeling tired all the time.

In this article, we’ll discuss the latest reasons why you’re feeling tired all the time and practical steps you can take to finally get to the bottom of your fatigue and feel rested.

What Happens When You’re Too Tired

If you sleep just two hours less than the normal eight hours, you could be as impaired as someone who has consumed up to three beers.[2] And you’ve probably experienced the impact yourself.

Here are some common examples of what happens when you’re feeling tired:[3]

  • You may have trouble focusing because memory and learning functions may be impaired within your brain.
  • You may experience mood swings and an inability to differentiate between what’s important and what’s not because your brain’s neurotransmitters are misfiring.
  • You may get dark circles under your eyes and/or your skin make look dull and lackluster in the short term and over time your skin may get wrinkles and show signs of aging because your body didn’t have time to remove toxins during sleep.
  • You may find it more difficult to exercise or to perform any type of athletic activity.
  • Your immune system may weaken causing you to pick up infections more easily.
  • You may overeat because not getting enough sleep activates the body’s endocannabinoids even when you’re not hungry.
  • Your metabolism slows down so what you eat is more likely to be stored as belly fat.

Are you saying that feeling tired can make me overweight?

Unfortunately, yes!

Feeling tired all the time can cause you to put on the pounds especially around your waist. But it is a classic chicken and egg situation, too.

Heavier people are more likely to feel fatigued during the day than lighter ones. And that’s even true for overweight people who don’t have sleep apnea (source: National Institutes of Health).

Speaking of sleep apnea, you may be wondering if that or something else is causing you to feel tired all the time.

Why Are you Feeling Tired All the Time?

Leading experts are starting to recognize that there are three primary reasons people feel tired on a regular basis: sleep deprivation, fatigue and Chronic Fatigue Syndrome (CFS).

Here’s a quick overview of each root cause of feeling tired all of the time:

  1. Tiredness occurs from sleep deprivation when you don’t get high-quality sleep consistently. It typically can be solved by changing your routine and getting enough deep restorative sleep.
  2. Fatigue occurs from prolonged sleeplessness which could be triggered by numerous issues such as mental health issues, long-term illness, fibromyalgia, obesity, sleep apnea or stress. It typically can be improved by changing your lifestyle and using sleep aids or treatments, if recommended by your physician.
  3. Chronic Fatigue Syndrome (CFS) is a medical condition also known as Myalgic Encephalomyelitis that occurs from persistent exhaustion that doesn’t go away with sleep.

The exact cause of CFS is not known, but it may be due to problems with the immune system, a bacterial infection, a hormone imbalance or emotional trauma.

It typically involves working with a doctor to rule out other illnesses before diagnosing and treating CFS.[4]

Always consult a physician to get a personal diagnosis about why you are feeling tired, especially if it is a severe condition.

Feeling Tired vs Being Fatigued

If lack of quality sleep doesn’t seem to be the root cause for you, then it’s time to explore fatigue as the reason you are frequently feeling tired.

Advertising

Until recently, tiredness and fatigue were thought to be interchangeable. Leading experts now realize that tiredness and fatigue are different.

Tiredness is primarily about lack of sleep.

But fatigue is a perceived feeling of being tired that is much more likely to occur in people who have depression, anxiety or emotional stress and/or are overweight and physically inactive (source: Science Direct).

Symptoms of fatigue include:

  • Difficulty concentrating
  • Low stamina
  • Difficulty sleeping
  • Anxiety
  • Low motivation

These symptoms may sound similar to those of tiredness but they usually last longer and are more intense.

Unfortunately, there is no definitive reason why fatigue occurs because it can be a symptom of an emotional or physical illness. But there are still a number of steps you can take to reduce difficult symptoms by making a few simple lifestyle changes.

How Much Sleep Is Enough?

The number one reason you may feel tired is because of sleep deprivation which means you are not getting enough high-quality sleep.

Most adults need 7 to 9 hours of high-quality, uninterrupted sleep per night. If you’re sleep deprived, the amount of sleep you need increases.

So, quantity and quality do matter when it comes to sleep.

The key to quality sleep is being able to get long, uninterrupted sleep cycles throughout the night. It typically takes 90 minutes for you to reach a state of deep REM sleep where your body’s healing crew goes to work.

Ideally, you want to get at least 3 to 4 deep REM sleep cycles in per night. That’s why it’s so important to stay asleep for 7 or more hours.

Research also shows that people who think they can get by on less sleep don’t perform as well as people who get at least seven hours of sleep a night[5] So, you should definitely plan on getting seven hours of deep restorative sleep every night.

If you are not getting 7 hours of high-quality sleep regularly, then sleep deprivation is most likely reason you feel tired all the time.

And that is good news because sleep deprivation is much simpler and easier to address than the other root causes.

It’s also a good idea to rule out sleep deprivation as the reason why you are tired before moving on to the other possibilities such as fatigue or Chronic Fatigue Syndrome, which may require a doctor for diagnosis and treatment.

4 Simple Changes to Reduce Fatigue

Personally, I’m a big believer in upgrading your lifestyle to uplift your life. I overcame chronic stress and exhaustion by making these four changes to my lifestyle:

  1. Eating healthy, home-cooked meals versus microwaving processed foods or eating out
  2. Exercising regularly
  3. Using stressbusters
  4. Creating a bedtime routine to sleep better

So, I know it is possible to change your lifestyle even when you’re working crazy hours and have lots of family responsibilities.

After I made the 4 simple changes in my lifestyle, I no longer felt exhausted all of the time.

In addition, I lost two inches off my waist and looked and felt better than ever.

Advertising

I was so excited that I wanted to help others replace stress and exhaustion with rest and well-being, too. That’s why I became a Certified Holistic Wellness Coach through the Dr. Sears Wellness Institute.

Interestingly enough, I discovered that Dr. Sears recommends a somewhat similar L.E.A.N. lifestyle:

  • L is for Lifestyle and means living healthy including getting enough sleep.
  • E is for Exercise and means getting at least 20 minutes of exercise a day ideally for six days a week.
  • A is for Attitude and means thinking positive and reducing stress whenever possible.
  • N is for Nutrition and means emphasizing a right-fat diet, not a low-fat diet.

The L.E.A.N. lifestyle is a scientifically-proven way to reduce fatigue, get to the optimal weight and to achieve overall wellness.[6]

And yes, there does seem to be an important correlation between being lean and feeling rested.

But overall based on my personal experience and Dr. Sear’s scientific proof, the key to not feeling tired all of the time does seem to be 4 simple changes to your lifestyle.

L — Living Healthy

Getting enough high-quality sleep every day is the surefire way to help you feel less fatigued, more rested and better overall.

So, whether you’re sleep deprived or potentially suffering from fatigue or Chronic Fatigue Syndrome, you probably want to find a way to sleep better.

In fact, if you aren’t getting enough sleep, your body isn’t getting the time it needs to repair itself; meaning that if you are suffering from an illness, it’s far more likely to linger.

As unlikely as it sounds, though, fatigue can sometimes make it difficult to sleep. That’s why I’d recommend taking a look at your bedtime routine before you go to bed and optimize it based on sleep best practices.

Here are 3 quick and easy tips for creating a pro-sleep bedtime routine:

1. Unplug

Many of us try to unwind by watching TV or doing something on an iPhone or tablet. But tech can affect your melatonin production due to the blue light that they emit, fooling your body into thinking it’s still daytime.

So turn off all tech one hour before bed and create a tech-free zone in your bedroom.

2. Unwind

Do something to relax.

Use the time before bed to do something you find relaxing such as reading a book, listening to soothing music, meditating or taking an Epsom salt bath.

3. Get Comfortable

Ensure your bed is comfortable and your room is set up for sleep.

Make sure you room is cool. 60-68 degrees is the ideal temperature for most people to sleep.

Also, it’s ideal if your bedroom is dark and there is no noise.

Finally, make sure everything is handled (e.g., laying out tomorrow’s clothes) before you get into your nice, comfy bed.

If your mind is still active, write a to-do list to help you fall asleep faster.[7]

Advertising

Above all, be gentle with yourself and count your blessings, some sheep or whatever helps.

This article also offers practical tips to build a bedtime routine: How to Build a Good Bedtime Routine That Makes Your Morning Easier

E — Exercise

Many people know that exercise is good for them, but just can’t figure out how to fit it into their busy schedules.

That’s what happened in my case.

But when my chronic stress and exhaustion turned into systemic inflammation (which can lead to major diseases like Alzheimer’s), I realized it was time to change my lifestyle.

As part of my lifestyle upgrade, I knew I needed to move more.

My friends who exercise all gave me the same advice: find an exercise you like to do and find a specific time in your schedule when you can consistently do it.

That made sense to me.

So, I decided to swim.

I used to love to swim when I was young, but I hadn’t done it for years. The best time for me to do it was immediately after work, since I could easily get an open swim lane at my local fitness club then.

Also, swimming became a nice reason for me to leave work on time. And I got to enjoy a nice workout before eating dinner.

Swimming is a good way to get your cardio or endurance training. But, walking, running and dancing are nice alternatives.

So find an exercise you love and stick to it. Ideally, get a combination of endurance training, strength training and flexibility training in during your daily 20-minute workout.

If you haven’t exercised in a while and have a lot of stress in your life, you may want to give yoga a try because you will increase your flexibility and lower your stress.

A — Attitude

Stress may be a major reason why you aren’t feeling well all of the time. At least that was the case with me.

When I worked 70 hours per week as a High-Tech Executive, I felt chronically stressed and exhausted. But there was one thing that always worked to help me feel calmer and less fatigued.

Do you want to know what that master stress-busting technique was?

Breathing.

But not just any old breathing. It was a special form of deep Yogic breathing called the “Long-Exhale Breathing” or “4-7-8 breathing” or “Pranayama” in Sanskrit).

Advertising

Here’s how you do “Long-Exhale Breathing”:

  1. Sit in a comfortable position with your spine straight and your hand on your tummy (so you know you are breathing deeply from your diaphragm and not shallowly from your chest)
  2. Breathe in deeply and slowly from your diaphragm with your mouth closed while you count to 4 (ideally until your stomach feels full of air)
  3. Hold your breath while you count to 7 mentally and enjoy the stillness
  4. Breathe out through your mouth with a “ha” sound while you count to 8 (or until your stomach has no more air in it)
  5. Pause after you finish your exhale while you notice the sense of wholeness and relaxation from completing one conscious, deep, long exhale breath
  6. Repeat 3 times ensuring your exhale is longer than your inhale so you relax your nervous system

This type of “long-exhale breathing” is scientifically proven to reduce stress.

When your exhale is twice as long as your inhale, it soothes your parasympathetic nervous system, which regulates the relaxation response.[8]

Plus, this is a great technique for helping you get to sleep, too.

N — Nutrition

Diet is vital for beating fatigue – after all, food is your main source of energy.

If your diet is poor, then it implies you’re not getting the nutrients you need to sustain healthy energy levels.

Eating a diet for fatigue doesn’t need to be complicated, time-consuming though.

For most people, it’s just a case of swapping a few unhealthy foods for a few healthier ones, like switching from low-fiber, processed foods to whole, high-fiber foods.

Unless your current diet is solely made up of fast food and ready meals, adjusting to a fatigue-fighting diet shouldn’t be too much of a shock to the system.

Here’re 9 simple diet swaps you can make today:

  1. Replace your morning coffee with Matcha green tea and drink only herbal tea within six hours of bedtime.
  2. Add a healthy fat or protein to your any carb you eat, especially if you eat before bed. Please note that carb-only snacks lead to blood-sugar crashes that can make you eat more and they can keep you from sleeping.
  3. Fill up with fiber especially green leafy vegetables. Strive to get at least 25g per day with at least 5 servings (a serving is the size of your fist) of green vegetables.
  4. Replace refined, processed, low-fiber pastas and grains with zucchini noodles and whole grains such as buckwheat, quinoa, sorghum, oats, amaranth, millet, teff, brown rice and corn.
  5. Swap natural sweeteners for refined sugars and try to ensure you don’t get more than 25g of sugar a day if you are a woman and 30g of sugar a day if you are a man.
  6. Replace ice cream with low-sugar alternatives such as So Delicious Dairy-Free Vanilla Bean Coconut Ice Cream.
  7. Swap omega-6, partially-hydrogenated oils such as corn, palm, sunflower, safflower, cotton, canola and soybean oil for omega-3 oils such as flax, olive and nut oils.
  8. Replace high-sugar yoghurts with low-sugar, dairy-free yoghurts such as Kite Hill Plain Yoghurt with 1g sugar or Lifeway Farmer Cheese with 0g sugar.
  9. Swap your sugar-laden soda for sparkling water with a splash of low-sugar juice

Also, ensure your diet is giving you enough of the daily essential vitamins and minerals. Most of us don’t get enough Vitamin D, Vitamin B-12, Calcium, Iron and Magnesium. If you are low on any of the above vitamins and minerals, you may experience fatigue and low energy.

That’s why it’s always worth having your doctor check your levels. If you find any of them are low, then try to eat foods rich in them.

Alternatively, you might consider a high-quality multi-vitamin or specific supplement.

The Bottom Line

If you are tired of feeling tired, then there is tremendous hope.

If you are tired because you are not getting enough high-quality sleep, then the best remedy is a bedtime routine based on sleep best practices.

If you are tired because you have stress and fatigue, then the best remedy are four simple lifestyle changes including:

  • Enough High-Quality Sleep with Bedtime Routine
  • Regular Exercise You Love
  • Stress Reduction with Long-Exhale Breathing
  • Fatigue-Reducing Diet

Overall, adopting a healthier lifestyle Is the ideal remedy for feeling more rested and energized.

More Tips to Help You Rest Better

Featured photo credit: Cris Saur via unsplash.com

Reference

[1] YouGov: Two-fifths of Americans are tired most of the week
[2] National Safety Council: Is Your Company Confronting Workplace Fatigue?
[3] The New York Times: Why Are We So Freaking Tired?
[4] Mayo Clinic: Chronic fatigue syndrome
[5] Mayo Clinic: Lack of sleep: Can it make you sick?
[6] Ask Dr. Sears: The L.E.A.N. Lifestyle
[7] American Psychological Association: Getting a Good Night’s Sleep
[8] Yoga International: Learning to Exhale: 2-to-1 Breathing

Read Next