Mercy Urogynecologist Dr. Mark Ellerkmann Discusses Health Benefits Of Drinking 8 Glasses Of Water A Day

April 1, 2013
Mercy urogynecologist Dr. Mark Ellerkmann

Mercy urogynecologist Dr. Mark Ellerkmann

While many people have heard over the years that they should drink eight ounces of water eight times a day, a recent medical article seems to debunk that myth and others similar to it.

According to an article by Dr. Heinz Valtin at Dartmouth College's Geisel School of Medicine, the "8x8" theory, as it's known, is false. The article says there is no scientific study to back it up.

According to Mercy urogynecologist Dr. Mark Ellerkmann, there are certain situations where drinking a lot of water is necessary, such as being in a hot climate or doing vigorous exercise. There are also certain medical conditions that require extra hydration. But overall, it's not necessary.

"Humans are typically pretty good at regulating their own fluid imbalance. Our thirst center tells us when we are thirsty long before we are dehydrated," Dr. Ellerkmann said.

Valtin's article also said the idea that drinking lots of water can fill a person up is also false.

"What we know about water intake is it doesn't really affect the satiety center in our brain that tells us not to eat so much," Dr. Ellerkmann said.

Another assertion the article makes said caffeinated drinks and some alcoholic beverages actually do count toward your daily water intake.

"Not just water, but any beverages that we drink, including -- believe it or not -- any dilute alcohol. Beer, for example, can be tallied into that overall intake," Dr. Ellerkmann said.



Dan Collins - Senior Director of Media Relations at Mercy Medical Center

Dan Collins, Senior Director of Media Relations

Email: Office: 410-332-9714 Cell: 410-375-7342

About Mercy

Founded in 1874 in downtown Baltimore by the Sisters of Mercy, Mercy Medical Center is a 183-licensed bed acute care university-affiliated teaching hospital. Mercy has been recognized as a top Maryland hospital by U.S. News & World Report; a Top 100 hospital for Women’s Health & Orthopedics by Healthgrades; is currently A-rated for Hospital Safety (Leapfrog Group), and is recognized by the American Nurses Credentialing Center as a Magnet Hospital. Mercy Medical Center is part of Mercy Health Services (MHS), the parent of Mercy’s primary care and specialty care physician enterprise, known as Mercy Personal Physicians, which employs more than 200 providers with locations in Baltimore, Lutherville, Overlea, Glen Burnie, Columbia and Reisterstown. For more information about Mercy, visit, MDMercyMedia on FacebookTwitter, or call 1-800-MD-Mercy.

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