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Is Drinking a Lot of Water Good For You?

Is Drinking a Lot of Water Good For You?

There is a common belief that drinking an excessive amount of water is somehow good for the human body.

Many claim that increasing our intake of water can lead to all sorts of health benefits including increased fat burning, less appetite, more energy, etc. But, what does the actual science say about that?

Is there any real benefit to drinking more water than the plain old thirst commands? Or are we just wasting our effort filling and refilling those water bottles all the time? (not to mention having to pee every hour of the day)

First of All, How Much is Too Much?

Before I continue, I should clarify what “a lot of water” means. “A lot of water” implies drinking many glasses of water per day, despite not being thirsty. People who do this often carry water bottles with them everywhere they go, and go to the bathroom to pee all the time.

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There is such a thing as “too much water”, which is water intake to the extent that it becomes dangerous. If you drink an insane amount, like in a water drinking contest (very stupid), you may go into a condition known as water intoxication, which can be deadly. The body’s cells need a constant balance of various electrolytes (salts). When you pee and sweat, some electrolytes tend to get out along with the water. Athletes that drink a lot of water to replace intense sweating, without replenishing the body’s salts, may dilute their body fluids. This can mess up the electrolyte balance and cause a condition known as hyponatremia, which can also be deadly.

Therefore, it is important to get in some electrolytes (salts) along with your water if you exercise intensely and sweat a lot. Some sports drinks include the necessary electrolytes to replace what is lost through sweat. But given that you are not participating in a water drinking contest (you’re smarter than that, anyway), and that you make sure to replace massive sweating with both water and electrolytes, then drinking a lot of water is completely safe.

Water and Cognitive Function

Drinking a lot of water isn’t going to make you smarter, but there is a tiny bit of evidence to show that a mild dehydration can slightly impair mental function.

25 healthy women were dehydrated by means of either exercise or diuretics. On average, they lost a little over 1% of their body mass. The women who were dehydrated had an increased perception of task difficulty, less focus, more symptoms of headache, and a degraded mood compared to controls. Thus, it does seem like a good idea to make sure you do not get dehydrated, and take note that 1% of body mass is a very mild dehydration.

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If you do feel a little blue at times, then perhaps you’re only a few glasses of water away from feeling your best again.

Water Intake and Bladder Cancer

There was one large-scale prospective study performed on 47.909 health professionals. This study found water intake to be inversely associated with cancer of the urinary bladder, with those who drank 6 or more (1440ml+) cups per day half as likely to get bladder cancer than those drinking less than 1 cup per day (-240ml).

In fact, the authors noted that each additional cup (240ml) lowered the risk by 7%. However, other studies found no protective effect against bladder cancer by drinking more water.

Water and Colorectal Cancer

Several studies show a significant protective effect of water intake against colorectal cancer, which is both common and deadly. In fact it is the third most common cause of cancer death.

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These studies show a risk reduction as high as 30-60%, but in some cases they are not statistically significant so they should be taken with a grain of salt.

Fluid Intake and Urinary Health

There is some evidence that drinking plenty of water might reduce chances of recurrence in patients who have been previously diagnosed and treated with kidney stones.

Water as a fat burning beverage

An observational study of 5.783 Chinese adults found that water intake was inversely associated with energy density of the diet, total energy intake and overweight status. Another study in 24 lean women found out that those who ate liquid food (soup) ate a lot less than those who had the same amount of food in solid form. However, eating the solid food with a glass of water on the side had no effect.

I’d like to point out, that despite water with a meal slightly increasing satiety, there is no indication that this would lead to weight loss in the long term, as there are so many other factors at play. There is, however, a small chance that if you stay well hydrated throughout the day, you won’t feel as hungry and won’t eat as much.

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If you really want to dig into the whole science behind water intake and health, then I recommend you take a look at this paper (12 – PDF).

Conclusion

In fact, if you don’t drink water for a few days, you will die. If you’re thirsty, water is the way to go. It is clean, calorie free, contains no additives and it’s really the only thing adult humans and pre-humans have been drinking for the last millions of years.

Elderly people may need to consciously make sure to drink water throughout the day as their brain may start to underestimate their required intake. That being said, I do not see any reason why it would be a good idea for young, healthy people to drink a lot more water than what thirst commands. The mechanism in our brain that controls water balance is incredibly efficient.

A common recommendation is eight 8 ounce glasses of water per day (the 8×8 rule). According to the studies above, 5 glasses might be enough. Make sure you don’t get dehydrated, drink 5 glasses of water throughout the day (especially with meals), but definitely increase your intake of water preferably alkaline water before, during, and after workouts to keep ultra-hydrated and to reduce the accumulation of acidity in your exercising muscles for a better workout intensity and recovery time. This less acidic water is available both in bottles and thru specialized machines.

All in all, there doesn’t seem to be any reason to carry a water bottle around all day and drink so much that you have to pee all the time except, of course, when exercising. If you’ve got all that covered, then you have nothing to worry about.

Featured photo credit: pixabay via pixabay.com

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Last Updated on October 18, 2018

10 Benefits of Sleeping Naked You Probably Didn’t Know

10 Benefits of Sleeping Naked You Probably Didn’t Know

Sleeping is one of the most important things we do every night.

Getting the right amount of sleep has an untold number of health benefits and not getting enough sleep is a serious problem in many countries around the world.

So you should have heard of the many benefits of getting adequate sleep, but did you know that you can get additional benefits by sleeping naked?

Here are some benefits of sleeping in the nude:

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Video Summary

1. It is easier.

When you don’t have to worry about sleeping in clothes, things start to get easier. You don’t have to buy pajamas, which can save you money. You have less clothes to wash and less clothes to put away. You may have to clean your bed sheets more often, but not nearly as often as you’d have to wash your pajamas when you run out.

2. It forces you to be ready to go more often.

Some people get off of work, change into their pajamas, and use this as an excuse to stay home the rest of the evening. This can lead to a more sedentary lifestyle, which has been attributed to things like weight gain.[1] When you keep your regular clothes on, you tend to go out more often and that’s a good thing.

3. It can make you feel happier and more free.

Just imagine the feeling of laying in bed naked. You’re free of your pants and underwear. Women, you’re not wearing a constrictive bra. It’s just you sandwiched between two cool sheets. The feeling just makes you want to smile and it makes you feel more free. Everyone can use that kind of good feeling every now and then, and it may even help you be happier as a person.

4. Skin-on-skin contact is the best.

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    If you’re married, or living with your significant other, sleeping naked gives a greater chance of skin-on-skin contact, especially when it comes to cuddling. This kind of contact can also lead to a more active sex life. All of this releases copious amounts of oxytocin, which is the neurotransmitter that helps you feel those good feelings about your significant other.[2]

    5. It could lead to better sleep.

    Let’s revisit the scenario I described above. There are no drawstrings or clothes getting tangled in sheets. You don’t have to worry about shirts getting twisted. All of these distractions go away when you sleep naked and it may help you get better, deeper sleep. You don’t need science to tell you that better, deeper sleep only helps you be healthier.

    6. It can help your skin.

    For once your body gets to breathe. Your private parts, armpits, and feet are generally restricted all day and are often covered by multiple layers, even in the summer time. Give those parts a chance to air out and breathe. This can lower the risk of skin diseases, like athlete’s foot, that result from wet, restricted skin.[3]

    7. It helps you regulate your cortisol.

    Cortisol is a very strange chemical in the body but it can do a lot of damage. When you sleep naked, it helps keep your body temperature at the optimal ranges so your body can better create cortisol. If you sleep overheated your cortisol levels tend to stay high, even after you wake up. This can lead to increased anxiety, cravings for bad food, weight gain, and more terrible things.[4] Sleep naked so you can keep your body temperature down and sleep well so your body can properly produce and regulate cortisol.

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    8. It balances your melatonin and growth hormone.

    Continuing along that same vein, keeping your sleeping environment below 70 degrees (F) every night can help your body regulate its melatonin and growth hormone levels. These chemicals help the body do things like prevent aging and are essential to good health. When you sleep in clothes, your body heats up and prevents effective use of these hormones. In other words, sleeping with clothes on makes you grow old faster.

    9. It can keep your sex organs happier.

    For men, the cooler sleeping conditions allows your testes to remain at a cooler temperature. This helps keep your sperm healthy and your reproductive systems functioning as normal. For women, the cooler and more airy sleeping conditions can actually help prevent yeast infections. Yeast grows better in warm, moist conditions.[5] When it’s cooler and dryer, the growth of yeast is prevented.

    10. Sleeping in the summer is more bearable.

      Summertime is a tricky time to get good sleep. If you don’t have air conditioning, then you may find your bedroom a bit stuffy at night.

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      Shedding those bedtime clothes can help the bedroom feel more comfortable. You may even be able to turn the A/C off on those cooler nights, which can save you a few bucks on your electricity bill.

      Don’t wake up drenched in sweat again because your thermostat is downstairs and the hot air expands up to your bedroom where the thermostat can’t read the warm temperatures.

      Sleep well with your naked body!

      With these tips in mind, it’s time to start taking off your clothes at night!

      Of course, there are times where clothes are preferable. If you are ill or it’s cold outside, then you should sleep with clothes on to help you stay warm and prevent further illness. Otherwise, go commando!

      If you’re looking for more tips to sleep well and get up feeling energetic, I recommend you to check out this guide:

      Want to Feel More Energized Throughout the Day? Start With This

      Reference

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