A Urologist Explains How Much Water You Should Actually Drink

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We’ve all heard at some point that we should be drinking eight glasses of water per day to meet our hydration goals and stay healthy—but is that really true? In a recent video on her YouTube channel, urologist Dr. Rena Malik addresses some myths around water and hydration, starting with the misconception that if you drink less, you will need to pee less often.

“Drinking too little water makes your urine very concentrated,” she says. “That concentrated urine can actually act like a bladder irritant… That means you may have the sensation that you need to go more frequently or more urgently.”

That said, are the commonly cited eight glasses of water per day considered an ideal volume? Not necessarily. “You need to be having some form of fluids in that volume a day,” says Malik. “20 percent of our fluids come from our food.”

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According to the Institute of Medicine, men are recommended to take in 125 ounces (3.7 liters) of total fluid from beverages and food each day, while women are advised to consume 91 ounces (2.7 liters).

“Our bodies do an amazing job of regulating our fluids, and it tells us when we need to drink by giving us signals that we are thirsty,” she continues. “Generally speaking, your body doesn’t decide that it’s thirsty until you’ve lost about 2 percent of your body water. That’s not a lot, and it’s very easy to make up by drinking fluids.”

Malik added that in some cases, you will need to drink more fluids, such as if you get frequent urinary tract infections. In instances like these, you should follow the guidance of your doctor.

While being well-hydrated is an important part of our overall health and nutrition, and has even been linked to peak performance, Malik warns that being over-hydrated comes with its own issues. “Sometimes if you drink too much, it can lower the salt in your body too much and cause something called hyponatremia, which can make you very sick,” he says.

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Do students really eat that badly?

Students have a reputation for eating nothing but pasta and baked beans on toast (which, in fact, is pretty good for us) – but there’s much more to students’ diets.

One survey found that one in 10 students in the UK are vegetarians, which is twice as many as the general population. Diets with low or no meat have been associated with health benefits, although the overall healthfulness of a vegetarian diet depends on what foods are eaten instead of meat. The same survey also found that a quarter of students eat convenience foods most, or every, day.

Another study concluded that only one in five students had “favorable eating behaviors”, which included moderate snacking, consuming little fast food and eating a lot of fruit and vegetables.

Researchers have also found that students are more likely to gain more weight than people of their age who don’t go to university.

Despite a brief deviation from the norm during Covid when students didn’t move out of their family homes, “the research shows that generally students don’t eat very healthily”, says Martin Caraher, professor emeritus of food and health policy at City, University of London.

On a more positive note, students are drinking less alcohol than they did 10 years ago, says John Holmes, professor of alcohol policy at the University of Sheffield in the UK. This is particularly good news because evidence suggests that we establish our drinking habits during young adulthood and maintain them, and that the risks for certain diseases, including liver disease, heart disease and some types of cancer (including breast, bowel and throat), increase based on the amount we drink over our lifetime, Holmes says.

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Students’ drinking habits can also affect their diets; they’re more likely to eat after drinking alcohol, and more likely to eat calorific foods high in salt and sugar, according to research. This behavior is perpetuated by the false belief that you have to eat something alongside drinking alcohol to help “soak up the alcohol”, says Jessica Kruger, clinical assistant professor of community health and health behavior at the University at Buffalo in New York.

“If someone’s out drinking, they’re not going to search for healthy options,” she says. “Nor do many bars or restaurants that are open late have many healthy options, especially in student areas.”

Kruger surveyed more than 250 students and found that they don’t tend to make healthy choices regarding food the day after drinking, either. While there’s no data, Kruger speculates that it may be because alcohol can dehydrate you, and in response, the body craves salty foods in order to get you to drink more water.

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Loco ‘local’ food law and Lewis and Clark

By Jeff Havens

Editor’s note: The Lewis and Clark Expedition, commissioned by President Thomas Jefferson, mapped and explored the Louisiana Purchase and areas West from 1804 to 1806, including the area from the Missouri River to the Pacific Ocean.

They were on the edge of starvation in the Bitterroot Mountains during mid-September 1805.

The 34 members of the Lewis and Clark expedition were so hungry they started eating their own horses. They also supplement the meat with canned “portable soup” on Sept. 14, 15, 16, 18, and 19 in that difficult year.

When Capt. Meriwether Lewis paid for canned soup in Philadelphia in May 1803, he could have never imagined his emergency food had a fair chance of killing all members of the expedition. This fact was largely dependent on whether the soup was boiled before consumption. To add to this difficulty, the emergency food was contained in lead canisters in which no oxygen could flow into the food.

This ignorance is comprehensible by today’s standards because science has yet to understand both germ theory and the negative health consequences of ingesting leads. In addition, scientists and food processors have no understanding of the deadliest known food poison: botulinum toxin.

Reasonable persons believe we have advanced well beyond early 19th-century ignorance, and in many ways, we have progressed. However, in some ways we are regressing, much to the detriment of public health.

Botulinum is a potent neurotoxin toxin. It is created under low-acid, low-oxygen environments, and cannot be detected by sight, smell or taste. One tablespoon of purified botulinum toxin has the potential to kill all humans on Earth, if an antitoxin is not administered, usually within the first 48 hours of symptom onset. In the worst circumstance, the toxin can be neutralized if the food is boiled prior to consumption for at least ten minutes, and longer at mountain altitudes.

This fact may have saved the expedition. as Pvt. Joseph Whitehouse suggested in his journal on Sept. 15, “we melted Snow to drink & make portable Soup.”

In 1803, Lewis had Chef Francois Baillet create a thick paste, consisting of water, beef chunks, egg whites, and chopped vegetables, known as “portable soup.” Baillet likely learned his food canning method indirectly through the efforts of French Chef Nicholas Appert who developed his canning process from 1799 to 1809. Appert packed foods into glass bottles, corked openings, and submerged the bottles in boiling water for times ranging from seven to 120 minutes. Appert eventually won a prize of 12,000 francs for his efforts in 1810 from emperor Napoleon Bonaparte of France.

Napoleon wanted a way to nourish troops for military campaigns.

The soup Lewis would buy today be classified as a low-acid canned food. Similar high-risk canned foods, to which substances like vinegar are added, are classified as acidified foods. Both of these foods are high-risk canned products, regulated by either the Food and Drug Administration (FDA) or the US Department of Agriculture (USDA).

Which agency has authority over high-risk canned food depends on two factors: the most relevant is whether the ingredients or product have been, or will be, subject to interstate commerce.

In the circumstance of the 2021 “Montana Local Food Choice Act,” the law bends over backwards to avoid USDA authority for both ingredients and products. However, it only does the same for FDA products. In other words, it’s impossible to legally reason that local “homemade” commercial food products using non-local ingredients are outside the FDA jurisdictional authority.

“Local” cannot also mean “nonlocal.” Worse, the law claims to be outside of consumer safety protections any reasonable person would expect from such homemade commercial foods.

One of the reasons for the extremely low number of incidents involving commercial foodborne botulism is that these foods have been subject to federal consumer safety standards.

If a state has no regulations or refuses to enforce regulations for high-risk canned foods, and the product includes interstate ingredients, the producer of that canned product is only exempt from the FDA’s emergency permit provision if they meet minimum standards. In such a circumstance, the FDA commissioner must investigate to determine whether to take emergency action on behalf of the public. Because most cases of botulism involve homemade food, it’s highly unlikely that any FDA commissioner would find an emergency permit provision that would not apply to Montana’s commercial homemade food law.

According to surveillance data from federal authorities, in the lower 49 states, the majority of botulism cases are attributed to homemade foods. For example, the most recent data available for 2018 indicated there were 17 laboratory-confirmed cases. Of the 17 cases, nine were attributed to homemade foods.

But this botulism risk is acceptable to Montana state Mon. Greg Hertz, Gov. Greg Gianforte, and state health department director Charles Brereton, who refuses to legally challenge

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