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Deep sleep can keep two big health problems at bay, new studies suggest

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Deep sleep can keep two big health problems at bay, new studies suggest

It might be worth working a little bit harder to get that much-desired, but often elusive, good night’s sleep.

Deep sleep clears the mind of waste just as a “dishwasher” cleans dirty plates and glasses, just-published research suggests — and there’s more.

The findings also offer insights into how sleeping pills may disrupt the “brainwashing” system — potentially affecting cognitive function for people over the long run.

ANOTHER REASON TO GET MORE SLEEP AND THIS ONE MIGHT SURPRISE YOU

Study senior author professor Maiken Nedergaard of the University of Rochester and the University of Copenhagen said norepinephrine (a neurotransmitter and hormone) triggers blood vessels to contract — generating slow pulsations that create a rhythmic flow in the surrounding fluid to carry away waste, news agency SWNS noted.

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Said Nedergaard, “It’s like turning on the dishwasher before you go to bed and waking up with a clean brain. . . . We’re essentially asking what drives this process and trying to define restorative sleep based on” this “glymphatic clearance.”

“It’s like turning on the dishwasher before you go to bed and waking up with a clean brain.” (iStock)

The brain has a built-in waste removal process – the glymphatic system – that circulates fluid in the brain and spinal cord to clear out waste, according to the scientists. 

The process helps remove toxic proteins that form sticky plaques linked to neurological disorders, such as Alzheimer’s disease.

But the scientists indicated that what drives the system was unclear until now, according to the study.

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Is all sleep created equal? The researchers wanted to find out.

To find clues, Nedergaard and her team looked into what happens in mice when their brains sleep, as SWNS reported of the study. The team focused on the relationship between norepinephrine and blood flow during deep sleep.

TRUMP’S DAYLIGHT SAVING PLAN AND SLEEP: WHAT YOU MUST KNOW

They found that norepinephrine waves correlate to variations in brain blood volume — suggesting that norepinephrine triggers a rhythmic pulsation in the blood vessels. The researchers then compared the changes in blood volume to brain fluid flow.

The brain fluid flow fluctuates in correspondence to blood volume changes, suggesting the vessels act as pumps to propel the surrounding brain fluid to flush out waste.

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During deep sleep, toxic proteins that form sticky plaques linked to neurological disorders such as Alzheimer’s disease are removed, scientists say in a new study.  (iStock)

Natalie Hauglund of the University of Copenhagen and the University of Oxford, the study’s lead author, said, “You can view norepinephrine as [the] conductor of an orchestra.” 

She added, “There’s a harmony in the constriction and dilation of the arteries, which then drives the cerebrospinal fluid through the brain to remove the waste products.”  

‘I CAN’T SLEEP BECAUSE OF RACING THOUGHTS AT NIGHT — HOW CAN I STOP THEM?’: ASK A DOCTOR

Hauglund said she wanted to understand whether all sleep is created equal. 

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To find out, the research team administered zolpidem, a common drug to aid sleep, to mice.

“If people aren’t getting the full benefits of sleep, they should be aware of that, so they can make informed decisions.” 

They found that the norepinephrine waves during deep sleep were 50% lower in zolpidem-treated mice than in naturally sleeping mice. 

Although the zolpidem-treated mice fell asleep more quickly — fluid transport into the brain dropped more than 30%, as SWNS reported.

Two new studies indicate the importance of getting a good night’s sleep — with one study saying a lack of sleep may be sabotaging the brain’s ability to keep intrusive thoughts at bay. (iStock)

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The researchers say their findings, published in the journal Cell, suggest that the sleeping aid may disrupt the norepinephrine-driven waste clearance during sleep.

Hauglund said, “More and more people are using sleep medication, and it’s really important to know if that’s healthy sleep. If people aren’t getting the full benefits of sleep, they should be aware of that, so they can make informed decisions.” 

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The research team said the findings likely apply to humans, who also have a glymphatic system, although it requires further testing.

Nedergaard added, “Now we know norepinephrine is driving the cleaning of the brain, we may figure out how to get people a long and restorative sleep.”

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Meanwhile, a lack of sleep may be doing more damage than just making people groggy.

It could be sabotaging the brain’s ability to keep intrusive thoughts at bay.

Anyone who suffers from sleep deprivation may find that the brain’s defense against unwanted memories is weakened, say experts. (iStock)

Another new study, this one published in the Proceedings of the National Academy of Sciences, found that sleep deprivation weakens the brain’s defense against unwanted memories, allowing them to flood the mind, according to the New York Post. 

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“We show that sleep deprivation disrupts prefrontal inhibition of memory retrieval, and that the overnight restoration of this inhibitory mechanism is associated with time spent in rapid eye movement (REM) sleep,” the scientists said.

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Brain Health Challenge: Doctor Appointments for Your Mind and Body

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Brain Health Challenge: Doctor Appointments for Your Mind and Body

Congratulations, you’ve reached the final day of the Brain Health Challenge! Today, we’re asking you to do a few things that might feel a bit out of left field — like getting your blood pressure checked.

No, it isn’t as fun as playing Pips, but experts say it’s one of the most important things you can do for your brain. That’s because heart health and brain health are intrinsically linked.

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High blood pressure, in particular, can damage brain cells, and it’s a significant risk factor for stroke and dementia. When blood pressure is too high, it places stress on the walls of arteries in the brain. Over time, that added stress can cause the blood vessel walls to thicken, obstructing blood flow. In other cases, the increased pressure causes the artery walls to thin and leak blood into the brain.

These changes to the blood vessels can sometimes cause a large stroke to occur. More commonly, the damage leads to micro-strokes and micro-hemorrhages, which cause fewer immediate problems and often go unnoticed. But if someone has hypertension for years or decades, these injuries can build up, and the person may start to experience cognitive impairment.

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High blood pressure “is known as a silent killer for lots of reasons,” said Dr. Shyam Prabhakaran, the chair of neurology at the University of Chicago. “It doesn’t cause you any symptoms until it does.”

Because the damage accumulates over many years, experts say that managing blood pressure in midlife matters most for brain health. Hypertension can be addressed with medication or lifestyle changes, as directed by your doctor. But the first thing you need to do is know your numbers. If your blood pressure comes back higher than 120/80, it’s important to take it seriously, Dr. Prabhakaran said.

While you’re at it, there are a few other aspects of your physical health that you should check on.

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Your eyes and ears are two of them. Hearing and vision loss have both been shown to increase the risk of dementia. Experts think that with less sensory information coming in to stimulate the brain, the regions that process hearing and vision can start to atrophy. What’s more, people with sensory loss often withdraw or are left out of social interactions, further depriving them of cognitive stimulation.

Oral health can also affect your brain health. Research has found a connection between regular flossing and reduced odds of having a stroke. That may be because good oral health can help to reduce inflammation in the body. The bacteria that cause gum disease have also been tied to an increased risk of Alzheimer’s.

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And have you gotten your shingles vaccine? There is mounting evidence that it’s a powerful weapon for protecting against dementia. One study found that it lowered people’s odds of developing the condition by as much as 20 percent.

To wrap up this challenge, we want you to schedule a few medical appointments that benefit your brain, as well as your body.

After five days of feeding, exercising and challenging your brain, you are well on your way to better cognitive health. Thanks for joining me this week, and keep up the good habits!

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Health experts react as Andrew Huberman backs Trump admin’s new food pyramid

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Health experts react as Andrew Huberman backs Trump admin’s new food pyramid

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The Trump administration has taken a new approach to the food pyramid.

The Department of Health and Human Services (HHS) announced new guidelines on Wednesday with an updated, inverted pyramid. The top of the pyramid, which is now the wider part of the structure, is built on meat, fats, fruits and vegetables, while whole grains are at the narrow bottom.

This follows HHS Secretary Robert F. Kennedy Jr.’s mission to “Make America Healthy Again” (MAHA), aimed at addressing chronic disease, childhood illnesses and ultraprocessed foods.

DOCTORS WARN SOME POPULAR FOODS AND DRINKS COULD BE SECRETLY SABOTAGING MEN’S TESTOSTERONE LEVELS

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“The new guidelines recognize that whole, nutrient-dense food is the most effective path to better health and lower health care costs,” Kennedy said during a press briefing in Washington, D.C. 

“Protein and healthy fats are essential, and were wrongly discouraged in prior dietary guidelines. We are ending the war on saturated fats.”

The Trump administration announces the 2025-2030 Dietary Guidelines for Americans, putting “real food” back at the center of health. (realfood.gov)

The HHS secretary rallied against refined carbohydrates, food additives and added sugar, highlighting the health risks associated with sugar-sweetened beverages. 

Kennedy’s main message to Americans was to “eat real food.”

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TRUMP ADMIN’S NEW NUTRITION GUIDELINES TARGET ULTRA-PROCESSED FOODS, EASE UP ON RED MEAT AND SATURATED FATS

The announcement triggered reactions from top health and wellness voices, including Stanford neuroscientist Dr. Andrew Huberman, host of the “Huberman Lab” podcast.

In a post on X, Huberman shared the White House’s graphic of the new pyramid, praising the decisions that were made.

“Oatmeal (and I think that’s rice and sourdough) made the cut!” he commented. “In all seriousness, assuming overall calories are kept in check and people exercise & get sun(day)light, this looks spot on.”

He added, “Maybe up the veggies a bit, add low-sugar fermented foods like sauerkraut & this is great.”

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Huberman said in a thread on the same post that Americans “don’t have to eat all the foods” shown in the diagram.

“You won’t see me drinking milk or eating shrimp,” he said. “Nothing against shrimp, I just don’t like the taste. Aversion to crustaceans.”

“Maybe up the veggies a bit, add low-sugar fermented foods like sauerkraut & this is great,” Huberman commented on X. (Chance Yeh/Getty Images for HubSpot; iStock)

The new guidelines received praise from other major health figures, including former FDA commissioner Dr. David Kessler.

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“There should be broad agreement that eating more whole foods and reducing highly processed carbohydrates is a major advance in how we approach diet and health,” Kessler told The Associated Press.

“Protein and healthy fats are essential, and were wrongly discouraged in prior dietary guidelines.”

Dr. Bobby Mukkamala, president of the American Medical Association, shared in a statement that these guidelines “affirm that food is medicine and offer clear direction patients and physicians can use to improve health.”

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“The American Medical Association applauds the Administration’s new Dietary Guidelines for spotlighting the highly processed foods, sugar-sweetened beverages and excess sodium that fuel heart disease, diabetes, obesity and other chronic illnesses,” Mukkamala wrote.

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The American Medical Association applauded the HHS for its updated nutrition guidelines. (iStock)

But not all feedback was positive.

Some people expressed concern about prioritizing red meat and dairy, while calling for the limitation of saturated fat.

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Neal Barnard, president of the Physicians Committee for Responsible Medicine, shared in a reaction to STAT that while the guidelines “do have one or two good points, emphasizing fruits and vegetables and limiting alcohol,” the guidelines are “for the most part a strong reflection of industry influence.”

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Christopher Gardner, a nutrition expert at Stanford University, also spoke out against the new guidelines, as reported by NPR.

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“I’m very disappointed in the new pyramid that features red meat and saturated fat sources at the very top, as if that’s something to prioritize. It does go against decades and decades of evidence and research,” said Gardner, who was a member of the Dietary Guidelines Advisory Committee.

Fox News Digital’s Rachel Wolf, as well as Alexandria Hoff of Fox News, contributed reporting.

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Matt Damon’s Gluten-Free Diet Helped Him Lose 18 Pounds

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Matt Damon’s Gluten-Free Diet Helped Him Lose 18 Pounds


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Matt Damon’s Weight Loss: Actor Drops 18 Lbs with This Diet | Woman’s World




















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