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3 reasons why drinking too much water is bad for you
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If our body needs 8 glasses of water per day for good health, then drinking 20 should be better, right? Not necessarily. - photo by Paige Cook
Most people have heard you should drink eight glasses of water a day. In fact, hydration is a basic component to healthy living. However multiple studies have found the contrary suggesting your body cant handle excessive amounts of water.

Sure, we all know water is good for you. But when was the last time you drank eight glasses of water normally, without forcing it? Not only is it uncomfortable having that much liquid in your stomach, recent studies show its not healthy, either. In some extreme cases it has even led to death. Here are some reasons why too much of a good thing can cause more harm than benefits.

1. Consuming too much water hinders your body's ability to get rid of waste.

When you drink more water you urinate more, right? You would think that means you are getting rid of the waste quicker. But studies have shown that when you urinate excessively your kidneys have to work overtime to try stabilizing your system.

Your kidneys function is to sift excess waste and water out of the bloodstream, but when you drink too much water, there is a lot more blood for your kidneys to clean.

"If you drink too much water too quickly, the blood becomes diluted and the kidneys cannot filter it fast enough to maintain the proper sodium balance," explained Jill Lee in her article, "Can Drinking Too Much Water Hurt Your Kidneys" for Livestrong.com. "This condition is called hyponatremia and causes symptoms including fatigue, nausea, vomiting and frequent urination."

2. Excessive water negatively affects the brain.

While studies show water can help memory and focus, they also show that too much water can have the opposite effect. We already know that too much water dilutes your blood. But when your kidneys are unable to get rid of the excess water, the cells in your body swell and take in more and more water to relieve the burden on the kidneys.

"Most cells have room to stretch because they are embedded in flexible tissues such as fat and muscle, but this is not the case for neurons. Brain cells are tightly packaged inside a rigid boney cage, the skull, and they have to share this space with blood and cerebrospinal fluid, explains Wolfgang Liedtke, a clinical neuroscientist at Duke University Medical Center in the published article, "Strange but True: Drinking Too Much Water Dan Kill" for Scientific American. "Inside the skull there is almost zero room to expand and swell," he says.

As a result, some people experience seizures, coma, respiratory problems, even death.

3. It wears out your circulatory system.

When you drink too much water your body expands to accommodate all the water it doesnt need and cant process, and, much like clothes that dont fit get stretched and worn out quicker, the blood vessel walls wear out from taking on the excess fluid.

It also dilutes the amount of sodium in your blood, which your whole body needs in order to function. This means that your blood has to go through your body more times in order to get the appropriate amount of sodium to the rest of your cells. This also puts strain on your body because they arent getting the chemicals they need.

The same thing happens to your cells and kidneys. So, even if you stop drinking so much water, you could still have problems with your kidneys because they have been repeatedly flooded with surplus fluid.

The best practice would be to monitor your body's reaction to the amount of water you consume rather than focusing on the quantity.

According to Healthline.com, during a typical day, women should aim to drink 2.2 liters of fluids per day. Men should aim for 3 liters. When you are adequately hydrated, your urine will be pale yellow and you will not feel thirsty.

You should increase your water consumption in situations such as experiencing warmer weather, higher altitudes, during excessive exercise, you are pregnant or breastfeeding, experiencing a fever, or when you recovering from an illness which included vomiting or diarrhea.

For maintaining proper diet, nothing beats water. But, as with most things in life, balancing our diet and daily habits can open up the door to better, and smarter, healthy living.
Its toxic: New study says blue light from tech devices can speed up blindness
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A new study from the University of Toledo found that blue light from digital devices can transform molecules in your eyes retina into cell killers. - photo by Herb Scribner
It turns out checking Twitter or Facebook before bed is bad for your health.

A new study from the University of Toledo found that blue light from digital devices can transform molecules in your eyes retina into cell killers.

That process can lead to age-related macular degeneration, which is a leading cause of blindness in the United States, according to the researchs extract.

Blue light is a common issue for many modern Americans. Blue light is emitted from screens, most notably at night, causing sleep loss, eye strain and a number of other issues.

Dr. Ajith Karunarathne, assistant professor in the UT Department of Chemistry and Biochemistry, said our constant exposure to blue light cant be blocked by the lens or cornea.

"It's no secret that blue light harms our vision by damaging the eye's retina. Our experiments explain how this happens, and we hope this leads to therapies that slow macular degeneration, such as a new kind of eye drop, he said.

Macular degeneration is an incurable eye disease that often affects those in their 50s or 60s. It occurs after the death of photoreceptor cells in the retina. Those cells need retinal to sense light and help signal the brain.

The research team found blue light exposure created poisonous chemical molecules that killed photoreceptor cells

"It's toxic. If you shine blue light on retinal, the retinal kills photoreceptor cells as the signaling molecule on the membrane dissolves," said Kasun Ratnayake, a Ph.D. student researcher working in Karunarathne's cellular photo chemistry group. "Photoreceptor cells do not regenerate in the eye. When they're dead, they're dead for good."

However, the researchers found a molecule called alpha-tocopherol, which comes from Vitamin E, can help prevent cell death, according to Futurism.

The researchers plan to review how light from TVs, cellphones and tablet screens affect the eyes as well.

"If you look at the amount of light coming out of your cellphone, it's not great but it seems tolerable," said Dr. John Payton, visiting assistant professor in the UT Department of Chemistry and Biochemistry. "Some cellphone companies are adding blue-light filters to the screens, and I think that is a good idea."

Indeed, Apple released a Night Shift mode two years ago to help quell blue lights strain on the eyes, according to The Verge. The screen will dim into a warmer, orange light that will cause less stress on the eyes.