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The shorter your sleep, the shorter your life. The World Health Organization considers night shift work, where you lose sleep, a possible carcinogen. Every spring when we lose an hour of sleep, there's a 24% increase in heart attacks. Every fall, when we gain an hour of sleep, heart attacks decrease by 21%. Sleep is connected to our health in a massive way, and you need seven to eight hours of sleep. Turn your phones off hours before bed. Use blue light glasses if you have to. Get away from the screens and chill down. Maybe read before bed, but don't get stimulated.

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We often think about sleep in terms of energy and productivity, but you might be surprised to learn that it also plays a critical role in maintaining liver health. Research shows that consistently getting less than eight hours of sleep per night is associated with a higher risk of developing liver disease. For individuals who already have liver disease, poor sleep can make their symptoms worse, leading to worsen fatigue, cognitive impairment, and overall reduced quality of life. The liver and your sleep quantity and quality are definitely connected. Liver disease negatively affects sleep through multiple mechanisms. First, reduced liver health disrupts your body's natural melatonin levels. Melatonin is an essential hormone that regulates our sleep and wake cycles. So when melatonin is dysregulated, it can lead to sleep disturbances. On the other hand, chronic sleep deprivation can worsen liver disease itself. Poor sleep has been linked to insulin resistance, increased inflammation, and metabolic dysfunction, all of which can contribute to liver fat accumulation, fibrosis progression, and as damage accumulates over the long term, cirrhosis.

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Quality sleep is a cornerstone of good health, especially for those with kidney disease. During sleep, your body produces and releases cytokines, proteins that fight inflammation and infection. Sleep is when your body, including your kidneys, undergoes repair processes. Stress reduction. Good sleep lowers stress hormones that can burden your kidneys. Consistent schedule. Aim for seven to nine hours of sleep, going to bed and waking up at the same time daily. Create a sleep sanctuary. Keep your bedroom dark, quiet, and cool. Mind your diet. Avoid large meals, caffeine, and excess fluids close to bedtime. Relaxation techniques. Try deep breathing or gentle stretching before bed. Screen time. The blue light from devices can disrupt your sleep cycle. Remember, improving your sleep can significantly boost your immune function and support your kidney health. If sleep problems persist, consult a healthcare professional. Tap the link in our bio to contact us.

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Deep sleep burns fat because insulin levels are low, shifting the metabolism. Poor or insufficient sleep prevents this fat burning, causing fuel accumulation. Occasional sleep deprivation, like jet lag, can be recovered from, but chronic stress and alcohol consumption lead to consistently poor sleep. This results in a foggy brain, metabolic imbalance, reduced fat burning, and increased inflammation, weakening health defenses and increasing vulnerability to illness. Chronic stress leading to poor sleep makes getting sick unsurprising.

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During deep sleep, the gut repairs its lining and balances bacteria. The gut communicates with the brain via the vagus nerve to lower inflammation, improving digestion, immunity, and mood. Poor sleep disrupts this communication, causing bloating, fatigue, mood swings, and cravings. Aim for seven to nine hours of quality sleep, avoid late-night snacks, and establish a relaxing routine to improve gut health and overall well-being.

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Quality sleep is a cornerstone of good health, especially for those with kidney disease. Immune boost: during sleep, your body produces and releases cytokines, proteins that fight inflammation and infection. Kidney repair: sleep is when your body, including your kidneys, undergoes repair processes. Stress reduction. Good sleep lowers stress hormones that can burden your kidneys. Consistent schedule. Aim for seven to nine hours of sleep, going to bed and waking up at the same time daily. Create a sleep sanctuary. Keep your bedroom dark, quiet, and cool. Mind your diet. Avoid large meals, caffeine, and excess fluids close to bedtime. Relaxation techniques. Try deep breathing or gentle stretching before bed. Remember, improving your sleep can significantly boost your immune function and support your kidney health. If sleep problems persist, consult a healthcare professional. Tap the link in our bio to contact us.

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Many people are mouth breathers, which can lead to various health issues. Mouth breathing can affect your teeth, speech, and sleep quality. It disrupts your circadian rhythm and prevents deep delta wave sleep needed for healing. Lack of oxygen impairs detoxification and cellular function. Closing your mouth while sleeping can help improve sleep quality and overall health. Remember, oxygen is essential for creating glutathione, a detox mechanism in the body. Cells need oxygen to function properly and eliminate waste.

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During sleep, brain cells shrink, which increases fluid flow through lymphatic vessels, facilitating waste removal. Scientists are still researching the glymphatic system, but it is understood to be important for maintaining brain health.

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We could function on six hours a night of sleep. Eight hours is ideal. The difference in muscle gain and fat loss and hormones between six and eight is massive. It's not a small difference. It's a huge difference. And just to illustrate how important sleep is, if evolution through millions of years couldn't figure out how to get rid of sleep because if you think about it, needing to sleep every single night where you're vulnerable, you don't hear predators, you're not out hunting, you're not building, shelter, you're not doing things, you know, that are quote unquote productive or helpful, Evolution would have figured out a way around sleep, but it didn't. That just goes to show you how necessary sleep is for our bodies and for our Yeah. Our our living.

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The shorter your sleep, the shorter your life. Insufficient sleep is linked to cancer of the bowel, cancer of the prostate, cancer of the breast. So firstly, people who are sleeping just five to six hours a night will, on average, eat somewhere between 200 to 300 extra calories each day because of their underslept state. It's a critical factor in the obesogenic epidemic. It is critical for emotional first aid and mental health. You will sleep longer, but you will only get back maybe just three or four hours of that lost total eight. That's why we get such demonstrable disease, sickness, and impairment when you undergo a lack of sleep. So this is a recent occurrence in in human beings. I mean, the the only time we see it in nature is when you go into conditions of starvation.

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Research from 2012-2014 revealed the glymphatic system, a brain cleansing system involving glial cells. This system actively flushes toxins from the brain, unlike the previously assumed passive dripping of fluid. The glymphatic system removes substances such as tau proteins, amyloid plaques, and neurofibrillary tangles, which are associated with dementing diseases like Alzheimer's and Parkinson's. This cleaning process requires seven to eight hours, which is why eight to nine hours in bed is necessary.

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When we sleep, our body goes on a fast, which is why the first meal of the day is called breakfast. Fasting can help with weight loss and getting rid of impurities in the body. Some people have experienced positive effects on their health, including cancer shrinkage, by fasting for extended periods of time. Fasting can trigger autophagy, a process that helps repair and regenerate cells. It also promotes fat burning and increases human growth hormone levels. Fasting for 16-18 hours can be beneficial for fat loss and cellular regeneration. Incorporating fasting into your lifestyle can help combat chronic diseases and improve overall health.

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Regularity is key for good sleep. Go to bed and wake up at the same time every day, including weekends. The brain expects and thrives on regularity, which improves sleep quantity.

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Sleep is another interesting one. This idea that, you know, that you need eight hours of sleep has been around for a long time. It has been around basically since the industrial revolution. So this idea that natural human beings sleep eight hours a night is nonsense, it's just not true. And furthermore, when you start looking at the data, seven hours, if you actually look at, if you graph sort of how many hours a night you sleep on the x axis and sort of some outcome like cardiovascular disease or just how likely you are to die, it's kind of a U shaped curve. So people don't get much sleep or are in trouble. But the bottom of that curve is pretty much always about seven hours. So people actually do better if they sleep seven hours rather than eight hours. Yet we're told that if you don't sleep eight hours, there's something wrong,

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You realize you can extend your life just by fixing your sleep. If you're getting less than five hours of sleep, your risk for dying goes up by like twelve percent. So the sleep is a very powerful predictor of all cause mortality. And I'm not just talking about the amount of sleep, I'm talking about the quality of sleep.

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If you're waking between 1AM and 3AM, your liver might need extra support. Research shows that detoxification has a huge link to our circadian rhythm. This means that waking up in the middle of the night could be linked to your liver. The liver is the key organ for detoxification. The liver naturally does most of its detoxification when you're in your deep non REM sleep, around 12AM to 3AM. It processes and metabolises cholesterol, fatty acids, glucose, thyroid hormones, bile acids, iron, and everything in between. So if your liver is congested or imbalanced, this can affect your wake sleep cycle, your sleep rhythm. Does this sound like it relates to you? Do you think that your liver could be playing a role in the way you sleep or in the way your sleep is being disturbed?

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The glymphatic system in the brain only opens during sleep to clean and wash away toxins. Individuals who believe they can function on minimal sleep, such as four hours a night, may have a "toxic" or "dirty" brain due to the glymphatic system not having sufficient time to perform its cleaning functions.

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The speaker emphasizes sleep as a key recovery mechanism and a driver of health outcomes, prescribing seven to nine hours. "To sleep because that is the only recovery mechanism of your body." "I have seen patients lose weight like crazy just because they increase their sleep hours." "I have seen patients whose blood sugars have come in normal, whose BP has come down to normal just because they increase their sleep hours." "How much you have to sleep? Between seven to nine hours." These statements focus on sleep duration as a potential determinant of weight, metabolic markers, and cardiovascular indicators.

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Sleep is another interesting one. This idea that you need eight hours of sleep has been around for a long time. Colleagues in evolutionary medicine have put sensors on people who don't have all the things that we're told have destroyed sleep. When you put sensors on people who don't have any electricity, they sleep like six to seven hours a night, and they don't nap. So this idea that natural human beings sleep eight hours a night is just nonsense. Furthermore, when you start looking at the data, seven hours, if you graph how many hours a night you sleep on the x axis and some outcome like cardiovascular disease or just how likely you are to die, it's kind of a U shaped curve. So people who don't get much sleep are in trouble. But the bottom of that curve is pretty much always about seven hours. So people actually do better if they sleep seven hours rather than eight hours.

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Simple way of putting this is that if people meditate regularly, that's reducing stress. The reduction in stress is reducing cortisol. Again, cortisol is healthy, but it should be restricted to early part of the day. You don't want too many peaks in cortisol, especially not late in the day. By meditating, you get the healthy pattern of cortisol release. You sort of inoculate yourself somewhat against the unhealthy pattern of cortisol release. And as a consequence, either the sleep that people get is deeper and or the total amount of sleep that they need is reduced.

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Every night, almost everyone on the planet enters into a state of unconsciousness and paralysis. Sleep is regulated by your circadian rhythm or body clock located in the brain. There are four stages of sleep that the body experiences and cycles throughout the night. On a good night, we cycle through these stages four or five times. Stages one and two are light sleep. Stage four is where we begin to dream. The body creates chemicals that render it temporarily paralyzed so that we do not act out our dreams. Humans roughly spend one third of their lives asleep. Sleeping less than seven hours per day is associated with an increased risk of developing chronic conditions which could reduce life expectancy.

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Sleep is regulated by the circadian rhythm, which responds to light cues by producing melatonin at night and switching it off when it senses light. There are four stages of sleep that the body cycles through four or five times each night. Stages one and two are light sleep, where heart rate and breathing slow, body temperature falls, and muscles may twitch. Stage three, or 'delta sleep', is the first stage of deep sleep where cells produce growth hormone to service bones and muscles, allowing the body to repair itself. Stage four is when dreaming occurs, and the body becomes temporarily paralyzed. During this stage, the brain is extremely active, and eyes dart back and forth. Sleeping less than seven hours per day is associated with an increased risk of developing chronic conditions, which could reduce life expectancy.

The Ultimate Human

How To Improve Your Sleep With These Sleep Hygiene Tips | TUH #234

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Sleep quality drives brain health and metabolic function, yet modern life sabotages rest with light, screens, caffeine, and stress. The host explains that even a night of disrupted sleep can shave attention and memory, while chronic short sleep raises long-term risks like dementia. He emphasizes consistency over hours, noting that a schedule mirrors aging brain outcomes even when total sleep is adequate. The episode blends science with practical steps, underscoring the glymphatic system’s role in clearing brain waste during deep rest and highlighting a Nature study linking sleep duration to later cognitive risk. The host reframes sleep as a non-negotiable foundation for health and longevity, not a luxury for productivity. The conversation then narrows to four actionable sleep-hygiene pillars: set a reliable bedtime and wake time, optimize the bedroom with low-out-gassing materials, obtain bright light exposure in the morning, and establish a wind-down routine before bed. He promotes a sleep optimization course for listeners and reiterates that consistency beats perfection as the path to better mood, memory, and metabolic balance over time.

TED

A walk through the stages of sleep | Sleeping with Science, a TED series

Guests: Matt Walker

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Sleep is crucial for resetting our brain and body health, divided into non-REM and REM sleep. Non-REM sleep has four stages, with deeper stages aiding immune function and memory consolidation. REM sleep, characterized by vivid dreams, provides emotional support and boosts creativity. Throughout the night, non-REM and REM sleep alternate every 90 minutes, with deeper non-REM sleep dominating early and REM sleep later. Waking early can significantly reduce REM sleep, impacting overall sleep quality and health.

The Knowledge Project

The Sleep Expert: The 4 Things That Actually Work | Dr. Gina Poe

Guests: Dr. Gina Poe

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Dr. Gina Poe discusses the importance of sleep, emphasizing that it is essential for various bodily functions, including memory processing, emotional regulation, and immune system support. She explains that not remembering dreams can indicate efficient sleep, as the brain focuses on processing old memories rather than recording new ones. Sleep is characterized by different stages, including deep slow-wave sleep, which cleanses the brain, and REM sleep, which is crucial for emotional processing and memory consolidation. Poe highlights that sleep patterns vary throughout the night, with deep sleep occurring more in the first half and REM sleep in the latter half. She advises against late bedtimes, as they can disrupt the natural sleep cycle and hinder the brain's cleaning processes. Consistency in sleep schedules is vital for cognitive health, especially in older adults, and exposure to bright light in the morning helps regulate circadian rhythms. She also touches on the impact of nutrition on sleep quality, noting that large meals before bed can lead to disturbed sleep. Poe emphasizes the need for a calm pre-sleep routine to promote relaxation and better sleep quality. Lastly, she reflects on her journey in science, advocating for openness to new data and the importance of collaboration in understanding complex systems like the brain.