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Researchers Find An Unexpected Benefit of Caffeine: Honesty

Researchers Find An Unexpected Benefit of Caffeine: Honesty

Approximately 33% of — or about 83 million — Americans receive less than the recommended amount of sleep. Lack of adequate sleep has been linked to a host of adverse effects on our physical and mental health, including obesity, diabetes, high blood pressure, stroke, depression, and other ailments. It also wreaks havoc on our cognitive abilities and work performance by impairing memory and learning, judgment, and critical thinking. And of course, insufficient sleep is associated with a higher rate of accidents, injuries, and medical and occupational errors. However, it is less widely known that sleep deprivation may promote deception and even delinquency through its effects on self-control and regulation.

While some studies have shown that sleep deprivation is associated with unethical behavior as well as delinquency, one study demonstrates that providing a jolt of caffeine may help ward this off.

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The Experiment

How is this demonstrated, you ask? In their study, researchers compared 100 college students kept awake all night in a lab with 100 well-rested students. At the start of the experiment, all 200 students were given two pieces of mint gum. Half in each group received normal gum and the remaining half received gum with 200 mg of caffeine, or approximately the same amount contained in a 12-ounce cup of coffee.

Participants then engaged in a game where they were told that they would be splitting money with someone in the study. As part of the experiment, they could either send an honest or deceptive message to the participant with whom they thought they were sharing the money. The deceptive message would benefit them, whereas the honest one would not. An additional condition was that half of the total participants were encouraged to send the deceptive message as part of a test of social influence. The other half were not prompted to send either type of message.

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Results

They results are striking. The 100 sleep-deprived students were far more likely to send a deceptive message than their 100 well-rested counterparts. And among the sleep-deprived students, those who received the caffeine were less likely than their non-caffeinated counterparts to send the deceptive message.

These results highlight that sleep deprivation can lead to “ethical lapses,” but it also points to the idea that caffeine may help blunt this adverse effect.

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Another Study

A subsequent study suggested something similar, which is that caffeine may protect against increased risk-taking propensity in those who are sleep deprived. In this study, 25 adults completed two different risk-taking scales at regular intervals during 75 hours of continuous sleep deprivation. Yes, you read that right — these subjects had approximately three days of no sleep. Roughly half were given caffeine during the sleepless nights of the study; the control group received a placebo. Results showed that while the placebo group showed significant increases in risk-taking propensity and behavior over those three nights, the caffeinated group did not. So caffeine may help to compensate for the effects of even severe sleep deprivation.

Making Use of Caffeine

While caffeine is not a substitute for sleep, and can be detrimental in large doses, it may be able to offset the negative effects of sleep deprivation by giving you the extra energy needed to resist harmful social influences and strengthen willpower and self-control. So next time you feel sleepy, consider grabbing a cup of coffee or other caffeinated drink. It might just keep you from telling that little white lie or doing something you may later regret.

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5 Ways Forgiveness Can Benefit Your Life Joking Aside, Sarcasm May Enhance Creativity 7 Ways Emotions Cause You To Overeat 7 Ways Your Emotions Cause You to Overeat Researchers Find An Unexpected Benefit of Caffeine: Honesty language hacks for better health 3 Language Hacks To Promote Better Health

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Last Updated on February 21, 2019

15 Brain Foods You Should Be Eating Regularly to Keep Your Mind Sharp

15 Brain Foods You Should Be Eating Regularly to Keep Your Mind Sharp

These days there are so many food choices. Every marketing trick is used to make you buy brain foods, all-natural, fat-free or gluten-free products.

Could you blame them? They need to make a profit to keep existing and delivering their goods to the consumers.

But does this mean that foods with these labels are just regular products or do brain foods really exist?

That’s when research came in and proved that brain foods (meaning: foods that have a positive effect on the brain) really do exist.

In this article, you will find 15 brain foods you should be eating to keep your mind sharp.

1. Blueberries

One of the greatest gifts of Mother Nature; blueberries. Blueberries are known as the king of antioxidants[1] and are used to detox the body.

There are not a lot of studies that tried to prove the relationship between blueberries and the improvement of brain function. But there’s one study that consisted of 9 elderly people. They found that consuming blueberry juice on a daily basis for 12 weeks improved memory function.[2]

If this is not reasonable enough to include blueberries into your diet, you should read the following article on other benefits of blueberries:

What Blueberries Can Do? 10 Benefits of Blueberries That Will Impress You

As with every single one of the brain foods listed here: Consuming more than necessary can also lead to side effects, this is the same with blueberries.[3]

When including blueberries in your diet along with other brain foods; make sure to eat no more than 0.5 cups (4 oz./113 grams) a day.

2. Broccoli

The first vegetable on the list, broccoli. Whatever you do with it; roast, steam, blanch or saute.[4] It will still improve the sharpness of your brain.

There are two main nutrients in broccoli that makes it one of the brain foods on this list. Vitamin K, which is also found in lower amounts in blueberries, helps strengthen cognitive abilities.[5] The nutrient Choline improves your memory.[6]

There’s six times more vitamin K in broccoli than in blueberries. The downside is that blueberries are a bit tastier.

Include some broccoli with every warm plate you eat in a day, and your brain will turn into a SUPER brain.

3. Walnuts

Walnuts are the best choice of all the nuts when it comes to improving cognitive function. They have the same benefits as every other nut, but walnuts also contain omega-3 fatty acids.[7]

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Beside the improvement of heart health,[8] walnuts also provide a sharper memory (at least to women).[9]

Consuming walnuts also help slow mental decline[10] because of the Vitamin E that is found in walnuts.[11]

Next time you crave a snack, buy a bag of unroasted and unsalted walnuts. In the future, this will be the replacement of all unhealthy snacks like Twix.

Brain foods are not brain foods because they contain a lot of sugar. Brain foods usually consist of a high amount of vitamins and antioxidants. That’s how you can recognize them.

4. Green Tea

Some of us are coffee drinkers while others prefer tea. You don’t have to choose one or the other because both of them made it to the list (you’ll read later about coffee in number 11 of brain foods).

Green tea contains more than just caffeine; it contains L-theanine which essentially lowers the anxiety levels.[12] It also increases the levels of dopamine and alpha wave production (relaxation).

The lower levels of caffeine in green tea compared to coffee makes this a perfect brain function drink. Caffeine and L-theanine show synergistic effects that work best with the amount of caffeine found in green tea.[13]

People who drink green tea have proven that they have a more stable energy level and increased productivity compared to when they drink coffee. So, if you’re looking for brain foods that will enhance your productivity; green tea is the way to go.

5. Oranges

Orange is a beautiful gift from Mother Nature well known for the amount of Vitamin C in it. One large orange is enough to fulfill 100% of your daily Vitamin C intake. Vitamin C has a lot of benefits:

  • Vitamin C reduces the risk of chronic diseases like heart disease[14]
  • It may help fight against high blood pressure[15]
  • Vitamin C boosts immunity by increasing the production of white blood cells[16]
  • The most important of all: high levels of Vitamin C are found to be related to the improvement of memory and thinking. People suffering from dementia has been shown to have low levels of Vitamin C.[17] This may mean that by consuming enough Vitamin C, you will be able to prevent dementia.[18]

To learn more about everything related to Vitamin C, read the following article:

All You Need To Know About Vitamin C Benefits and Recipes To Boost Your Daily Intake

6. Avocados

Avocados fit very nicely in your salad, or you may even like it on toast.

Avocado is a source of healthy fats; monounsaturated fat. Monounsaturated fat is believed to contribute to healthy blood flow which in turn means a healthy brain.[19]

Besides that, avocados also lower blood pressure which will prevent a decrease in cognitive abilities.[20]

Adding 1/4 or 1/2 avocado daily should do the trick and help your brain function as a superhero.

If you need practical ways to include avocado in your daily diet, check this out:

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It’s The Era Of Avocado! Try these 50+ Super Easy Avocado Recipes At Home Now!

7. Coconut Oil

Coconut oil is a multi-functional oil; some bathe in it, some put it all over their skin, and it’s also used for cooking. To get the following benefits out of it; you should consume it orally (but that’s up to you of course).

When it comes down to improved brain function; coconut oil has proven to boost brain function in Alzheimer’s patients.[21] Although it isn’t shown to work on people without Alzheimer’s; it can never hurt.

Besides that there are many more benefits to coconut oil.

8. Spinach

One research found that when elderly consumed one (or two) daily serving of spinach (or other leafy greens for that matter) for an average of 5 years had the same cognitive abilities as someone 11 years younger who never consumed leafy greens.[22]

This all is thanks to Vitamin K that is found in leafy greens like spinach, kale, collards and mustard greens.

Popeye looks impressive from the outside, and you will look impressive from the inside once you consume your daily spinach:

6 Mouth-Watering Spinach Recipes You Should Not Miss

9. Oatmeal

Known for its use as breakfast, oatmeal is one of many kinds of cereal that contains more than just sugar.

There’s a reason why oatmeal is often used as breakfast. It is because of the many carbohydrates that are in it which act like a shot of glucose that spikes your blood sugar levels.

Glucose is sent immediately to the brain to help it function. In essence, this means that the higher the concentration of glucose in your blood, the better you can focus and remember things.[23]

If you suffer from low blood sugar levels in the morning and can’t function without having a big breakfast immediately upon waking, oatmeal is going to be your best friend.

10. Raisins

Children often consume them as healthy snacks because it’s sweet. But did you know raisins promote brain function?

Raisins are the number one source of boron of all brain foods. The research found that the level of boron is related to hand-eye coordination and short-term memory.[24] Increased levels of boron improves both.

Besides that, raisins also:

  • Heal wounds faster
  • Prevent deficiency in Vitamin D
  • And much more (read the comprehensive research linked to in number 21)

Thank your mom for putting those raisins in your lunch box in elementary school and return the favor by doing the same for your children.

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11. Coffee

We touched on the benefits of green tea earlier, but that doesn’t mean coffee can’t serve its purpose to brain function as well. If you prefer coffee over tea; listen (actually read) closely.

There’s something about coffee that most people don’t even know. The point is that most of us consume more antioxidants through coffee than any other of the mentioned brain foods.

This is not because there are more antioxidants in coffee; it’s because coffee is consumed the most of all brain foods.

These antioxidants protect your brain from cell death which in turn protects you from dementia and related diseases.[25]

Not to mention that caffeine may also prevent dementia and Alzheimer’s.[26][27]

You don’t have to give up your coffee; except for all the sugar and milk you put in it. Drink your coffee black and keep it to a maximum of 3 per day and you should be okay.

12. Almonds

Earlier we touched upon walnuts, but most nuts are generally good for your health (as long as you don’t overdo it).

Almonds are most known for their potential of enhancing memory and delaying Alzheimer’s progression.[28][29] Of course, they share the same benefits with the walnuts, but almonds are lower in omega 3 fats.

If you forget things on a daily basis, maybe a handful of almonds per day can help you.

Five to six almonds a day should do the trick. If you’re not watching your weight, you can just grab a handful. But don’t overdo it because there’s a lot of fats in nuts.

Check out this article to see more benefits and recipes with almost:

10 Benefits of Almonds That Will Surprise You (+Healthy Recipes)

13. Lentils

Lentils for the vegans among you is one of the best sources of protein among legumes. Besides that, it is a rich source of various essential nutrients like iron, Vitamin B6, and folate (Vitamin B9).

Besides the fact that they make a terrific combination with rice; lentils also serves its purpose in the brain. All the essential nutrients improve brain function in their own way:

  • Folate (Vitamin B9) keeps your mind sharp while you get older.[30]
  • Iron plays an essential role in cognitive functioning with pregnant women.[31]
  • Zinc is well known for boosting memory.[32]
  • Vitamin B6 and thiamine give you more energy and focus.[33][34]

As you can see; lentils make up one of the best brain foods on this list. But this also depends on your preference as some of you might’ve never even eaten lentils.

14. Strawberries

Most berries and other related fruits like strawberries (which are technically seen not berries) are all known to have beneficial effects on the brain.[35] They help prevent age-related memory loss and may even slow the progress of Alzheimer’s.[36]

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Another thing that is more strawberry related is the amount of potassium in it. Potassium is related to increased blood flow thus improved cognitive function.[37]

Eight strawberries per day should do the trick and give you many benefits besides these brain-enhancing benefits:

10 Amazing Benefits of Strawberries that You Probably Never Knew

15. Red Wine

Last but not least, maybe your favorite alcoholic drink: red wine. If you thought you had to give up alcoholic beverages; you were wrong.

Although alcohol itself is not related to any improvement in brain functioning; some studies show that there are benefits to drinking lightly or moderately.

Out of all the alcoholic beverages, red wine is the one with the most favorable results. Research shows that red wine may even slow aging[38] and it can also decrease the risk of dementia.[39]

Although these results are based on research, the researchers don’t recommend that any non-drinkers start drinking. Especially younger people shouldn’t aim to drink red wine as the most benefits (or no increased risks) are found in the elderly.

If you think about drinking red wine, you should drink maximum 1 glass of red wine per day as a woman and maximum of 2 glasses of red wine per day for men. One glass of red wine should contain 175ml, don’t overdo it.

Keep in mind that there are also potential risks to drinking alcohol:

  • Addiction
  • Depression
  • Weight gain

Conclusion

“You are what you eat.”

One of the oldest sayings ever expresses all you need to know.

Every food on this brain foods list is put on this list because it enhances brain functioning in some way. So, whichever food on this list you choose to eat after reading this article doesn’t matter.

What matters most is that you read everything closely and choose one of the brain foods that fit your goal the most.

Enjoy eating your next brain food!

More Resources About Boosting Brain Power

Featured photo credit: Melissa Belanger via unsplash.com

Reference

[1] Wild Blueberries: Wild Blueberries Antioxidants
[2] NCBI: Blueberry Supplementation Improves Memory in Older Adults
[3] Good Health All: 8 Major Side Effects OF Eating Too Many Blueberries
[4] Skinny Ms: How to Make Broccoli Taste Good, Each and Every Time
[5] Wellness Resources: Vitamin K Enhances Cognitive Function During Aging
[6] The American Journal of Clinical Nutrition: The relation of dietary choline to cognitive performance and white-matter hyperintensity in the Framingham Offspring Cohort
[7] The Journal Of Nutrition: Role of Walnuts in Maintaining Brain Health with Age
[8] NCBI: Cardiovascular risk factors and cognitive function.
[9] NCBI: LONG-TERM INTAKE OF NUTS IN RELATION TO COGNITIVE FUNCTION IN OLDER WOMEN
[10] NCBI: Vitamin E and cognitive decline in older persons.
[11] NCBI: Vitamin E-gene interactions in aging and inflammatory age-related diseases: implications for treatment. A systematic review.
[12] NCBI: The neuropharmacology of L-theanine(N-ethyl-L-glutamine): a possible neuroprotective and cognitive enhancing agent.
[13] NCBI: L-theanine and caffeine in combination affect human cognition as evidenced by oscillatory alpha-band activity and attention task performance.
[14] NCBI: Effect of five-year supplementation of vitamin C on serum vitamin C concentration and consumption of vegetables and fruits in middle-aged Japanese: a randomized controlled trial.
[15] NCBI: Effects of vitamin C supplementation on blood pressure: a meta-analysis of randomized controlled trials.
[16] NCBI: Association between nutritional status and cognitive functioning in a healthy elderly population.
[17] NCBI: Dietary antioxidants and dementia in a population-based case-control study among older people in South Germany.
[18] National Institute of Health: Vitamin C
[19] JOURNAL OF NEUROCHEMISTRY: Dietary intake of unsaturated fatty acids modulates physiological properties of entorhinal cortex neurons in mice
[20] National Institute on Aging: High blood pressure is linked to cognitive decline
[21] NCBI: Effects of beta-hydroxybutyrate on cognition in memory-impaired adults.
[22] News Wise: Eating Green Leafy Vegetables Keeps Mental Abilities Sharp
[23] PNAS: Stoichiometric coupling of brain glucose metabolism and glutamatergic neuronal activity
[24] NCBI: Nothing Boring About Boron
[25] NCBI: Neuroprotection and antioxidants
[26] NCBI: High Blood caffeine levels in MCI linked to lack of progression to dementia.
[27] NCBI: Hypoxia/reoxygenation impairs memory formation via adenosine-dependent activation of caspase 1.
[28] Science Direct: Repeated administration of almonds increases brain acetylcholine levels and enhances memory function in healthy rats while attenuates memory deficits in animal model of amnesia
[29] Science Direct: Almond, hazelnut and walnut, three nuts for neuroprotection in Alzheimer’s disease: A neuropharmacological review of their bioactive constituents
[30] NCBI: Folic acid, ageing, depression, and dementia
[31] The American Journal of Clinical Nutrition: Iron treatment normalizes cognitive functioning in young women
[32] ResearchGate: A potential medicinal importance of zinc in human health and chronic disease
[33] ORA: Vitamin B6 for cognition
[34] Springer Link: Thiamine supplementation mood and cognitive functioning
[35] J. Agric. Food Chem: Berry Fruit Enhances Beneficial Signaling in the Brain
[36] NCBI: Dietary intake of berries and flavonoids in relation to cognitive decline
[37] Science Direct: Potassium 2-(1-hydroxypentyl)-benzoate improves learning and memory deficits in chronic cerebral hypoperfused rats
[38] NY Times: New Hints Seen That Red Wine May Slow Aging
[39] NCBI: Moderate alcohol consumption and cognitive risk.

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