Medical News Today: Frequent urination at night may be a sign of hypertension

A new study conducted in Japan found that the need to urinate in the night, called nocturia, may be linked to hypertension and high salt intake.
close up of men's feet going to the toilet at night
Frequently going to the toilet at night may be a sign of high blood pressure, according to a new study.

Nocturia is a condition in which people wake up during the night because they need to urinate. Common causes of frequent trips to the toilet at night include high fluid intake, sleep disorders, and bladder obstruction.

People without nocturia can sleep up to 8 hours without having to urinate, but some may need to get up once during the night — one episode is still considered within normal limits. Individuals with nocturia may get up 2–6 times during the night.

Nocturia may be a sign of other health conditions, including bladder prolapse, a tumor of the bladder or prostate, and other disorders affecting sphincter control. Pregnant women and people with heart or liver failure and diabetes may also experience nocturia.

As we get older, our bodies produce less of an antidiuretic hormone that enables us to retain fluid — this leads to more urine production during the night. Older adults also tend to lose holding capacity and are more likely to have medical issues that impact the bladder.

According to a 2003 poll from the National Sleep Foundation, approximately two-thirds of responders, who were between the ages of 55 and 84, reported that they experienced nocturia at least a few nights per week.

Reducing salt intake may help with nocturia

A team of researchers presented the results of their recent study at the 83rd Annual Scientific Meeting of the Japanese Circulation Society. According to their findings, trips to the toilet to urinate at night may be linked to excessive salt intake and high blood pressure.

“Our study indicates that if you need to urinate in the night — called nocturia — you may have elevated blood pressure and/or excess fluid in your body,” says study author Dr. Satoshi Konno, of the Division of Hypertension at the Tohoku Rosai Hospital in Sendai, Japan.

Previous research showed that excessive daily salt intake and hypertension have a negative impact on nocturia. In Japan, people generally consume significantly more salt than those in Western countries, and for this reason, the Japanese population may be at higher risk of developing high blood pressure.

Though people in other countries tend to have different eating habits when it comes to salt, the results of these studies suggest that appropriate control of salt intake and blood pressure might be important for the treatment of nocturia, regardless of nationality.

Is there a causal relationship?

The researchers enrolled 3,749 residents of the town of Watari who had undergone an annual health check in 2017 and gathered information about their blood pressure levels and nocturia using questionnaires.

The data showed that getting up in the night to urinate was associated with a 40 percent greater chance of having high blood pressure, and the risk of hypertension rose significantly as the number of nocturia events per night increased.

Dr. Konno says that the results do not prove a causal relationship between nocturia and hypertension, and they may not apply to people who live outside Japan. “The relationship may be influenced by various factors including lifestyle, salt intake, ethnicity, and genetic background,” the researcher explains.

“Hypertension is a national disease in Japan. The average salt intake in Japan is approximately 10 grams per day, which is more than double the average salt intake worldwide (4 grams per day). This excessive salt intake is related to our preference for seafood and soy sauce-based food, so salt restriction is difficult to carry out,” says Dr. Mutsuo Harada, the conference’s press coordinator.

Dr. Harada adds that early detection and management of hypertension are crucial to prevent heart disease. It is important to research and understand the cause of nocturia in patients because this disorder can not only result from urinary organ problems — it may also be caused by diseases such as hypertension.

Professor and president of the European Society of Cardiology (ESC) Barbara Casadei notes: “More than 1 billion people have high blood pressure, worldwide. High blood pressure is the leading global cause of premature death, accounting for almost 10 million deaths in 2015. ESC guidelines recommend medication to reduce the risk of stroke and heart disease.”

“A healthy lifestyle is also advised, including salt restriction, alcohol moderation, healthy eating, regular exercise, weight control, and smoking cessation,” she adds.

Medical News Today: Night owls may experience ‘jet lag’ on a daily basis

Are you one of those people who goes to bed late and wakes up equally late? If so, you may be relieved to know a study has confirmed that this is your natural rhythm. However, in today’s working world, this may have serious effects, due to how your brain is wired.
man reading in bed
Night owls may be at a disadvantage compared with early risers, new research finds.

Some people declare themselves to be morning larks, or early risers, and they effortlessly wake up at the crack of dawn and fall asleep earlier in the evening.

Others, however, are night owls, or evening people, who stay up until the early hours of the morning and wake up later in the day, if left to their own devices.

Previous research has shown that the night owls face some health risks due to their daily rhythms. These include a tendency towards poorer dietary habits, which, in turn, can increase the risk of metabolic conditions, such as diabetes.

Now, a study led by investigators from the University of Birmingham in the United Kingdom has found out how activity patterns in the brains of night owls are different from those of morning people. The study also highlights how these differences can impact their lives and levels of productivity in a world that typically favors early risers.

“A huge number of people struggle to deliver their best performance during work or school hours they are not naturally suited to,” notes lead researcher Dr. Elise Facer-Childs, previously of Birmingham University and now based at the Monash Institute for Cognitive and Clinical Neurosciences in Melbourne, Australia.

“There is a critical need to increase our understanding of these issues in order to minimize health risks in society, as well as maximize productivity,” she emphasizes.

The researchers have now published their findings in a study paper featured in the journal SLEEP.

Brain activity in night owls

For this study, the research team recruited 38 healthy participants. They divided the volunteers into two groups, putting 16 early risers into one group and 22 late sleepers into the second.

The researchers split the participants into these two groups based on their melatonin and cortisol circadian rhythms — the natural circulation of these two hormones affect sleep and waking cycles.

The researchers monitored the participants’ sleeping and waking patterns, and the volunteers filled in questionnaires about their rhythms. On average, late sleepers went to bed at 2:30 a.m. and woke up at 10:15 a.m.

To assess brain activity patterns, the investigators asked the volunteers to undergo MRI scans. The researchers also tested the participants’ performance on various tasks they undertook at different times throughout the day to see how sleep-wake cycles affected daily functioning.

The team noticed a difference in brain activity patterns between the two groups, namely that night owls had lower resting brain connectivity in brain areas that scientists primarily associate with maintaining a state of consciousness. They correlated this with shorter attention spans, as well as slower reactions and lower energy levels.

Early risers performed better and had faster reaction times during morning tasks. They also declared themselves as being much less sleepy at that time.

On the contrary, as expected, late sleepers performed best and experienced the fastest reaction times around 8:00 p.m. However, even at the time when they were at their peak performance, night owls did not do much better than their early rising peers.

This suggests that throughout the day — or from around 8:00 a.m. to 8:00 p.m. — resting-state brain connectivity is affected in late sleepers, adversely impacting their productivity.

Social expectations ‘could be more flexible’

Dr. Facer-Childs likens the night owls’ state throughout the day to a form of constant jet lag, emphasizing that this may have a significant effect on their well-being in the long run.

This mismatch between a person’s biological time and social time — which most of us have experienced in the form of jet lag — is a common issue for night owls trying to follow a normal working day.”

Dr. Elise Facer-Childs

“Our study is the first to show a potential intrinsic, neuronal mechanism behind why night owls may face cognitive disadvantages when being forced to fit into these constraints,” she adds.

For this reason, the researcher argues that societies need to take a long, hard look at their organizational structures, chiefly in terms of working hours and how to become more accommodating to people’s individuals needs. This flexibilty should mean that night owls can put their best foot forward while avoiding adverse health outcomes.

“To manage this [situation], we need to get better at taking an individual’s body clock into account — particularly in the world of work,” Dr. Facer-Childs argues.

“A typical day might last from 9:00 a.m.–5:00 p.m., but for a night owl, this could result in diminished performance during the morning, lower brain connectivity in regions linked to consciousness, and increased daytime sleepiness,” she warns.

She further advises that “If, as a society, we could be more flexible about how we manage time, we could go a long way toward maximizing productivity and minimizing health risks.”

Nuna Sena Aire Mini in Night

The evolution-airy cot, just in a mini size! The Nuna Aire Mini delivers maximum airflow for unparalleled relaxation. o easy and breezy, even its mattress has two different levels of ventilation. Oh-and it’s all machine washable. How’s that for fresh thin

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The evolution-airy cot, just in a mini size! The Nuna Aire Mini delivers maximum airflow for unparalleled relaxation. o easy and breezy, even its mattress has two different levels of ventilation. Oh-and it’s all machine washable. How’s that for fresh thinking? Features: The only cot whose upper cot folds with the frame. Mesh sides, floor and mattress combine to create the advanced air design, allowing air flow from every angle. Mattress’s zip-off design is machine washable and dryer safe. Ventilated mattress pulls away both heat and humidity. Ventilated mattress panels easily remove for deep cleaning. No extras needed — organic sheets included! Chic look — perfect for home and away. Unique Zigzag frame pops cot open quickly and easily. One-hand set up and fold. Only playard with a bassinet that folds with frame. Above-ground base keeps baby draft-proof. Skid-proof feet keep sleep quiet and still. Travel bag included with easy carry handle. Water-resistant, durable fabrics resists stains, rips and tears. Mesh fabrics sides. Eight leg design provides double the durability and stability. Study, aluminum frame is easy to transport. Padded edges prevent finger pinches. 26.4” H x 24.8” L x 34.6” W

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Skip Hop Studio Select Day-to-Night Diaper Satchel in Pewter

Studio takes you from play date to date night. We took everything mom’s love about our Studio Tote and made it even more chic! The fashion-inspired shape and leather details of our Studio Select will have moms reaching for this bag whether traveling with

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Studio takes you from play date to date night. We took everything mom’s love about our Studio Tote and made it even more chic! The fashion-inspired shape and leather details of our Studio Select will have moms reaching for this bag whether traveling with baby or flying solo. Its extra-large capacity and two insulated bottle pockets will fit everything you need for a day at the park or a night on the town. The straps are perfectly crafted to hang on your stroller or swing from your arm. Features High quality durable fabric Perforated faux leather details and metal hardware Insulated bottle pockets Stroller straps Cushioned changing pad Size (inches): 17l x 7w x 12h; (cm) 43l x 18w x 30.5h

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Nuna Pipa Car Seat and Base Set in Night

Style and safety should never have to be sacrificed. Thanks to our clever and fashionable infant car seat the PIPA, both of these essentials are combined; providing ultimate comfort and protection for little lives, every which way you may decide to take t

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PCHseries HIgh Night Table

The smart PCH Night Table coordinates seamlessly with the PCH Canopy Bed. The drawer boast eye-catching cast aluminum, pulling out neatly to reveal a concealed storage area. Solid teak. natural oil finish. Polished aluminum. Comes fully assembled.

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The smart PCH Night Table coordinates seamlessly with the PCH Canopy Bed. The drawer boast eye-catching cast aluminum, pulling out neatly to reveal a concealed storage area. Solid teak. natural oil finish. Polished aluminum. Comes fully assembled. Dimensions: 24″W x 24″D x 18″H Curbside delivery include with purchase. White Glove delivery option available. Please call Customer Service at 1-877-663-2224 for more information. Maximizing durability, minimizing Impact. The PCHseries was designed to be a modern classic, one that would outlive trendy aesthetics or cheap construction. Where many other comparable products may deteriorate or fall out of style over time, the PCHseries uses superior craftsmanship, the highest of quality materials, and clean simple lines to ensure longevity and sustainability. What started simply as a design initiative and dedication to quality has tbecome our furnitue lines most environmentally friendly feature — its ability to last decades and substantially minimize the resources that would be invested to frequently replace it.

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The smart PCH Night Table coordinates seamlessly with the PCH Canopy Bed. The drawer boast eye-catching cast aluminum, pulling out neatly to reveal a concealed storage area. Solid teak. natural oil finish. Polished aluminum. Comes fully assembled.

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The smart PCH Night Table coordinates seamlessly with the PCH Canopy Bed. The drawer boast eye-catching cast aluminum, pulling out neatly to reveal a concealed storage area. Solid teak. natural oil finish. Polished aluminum. Comes fully assembled. Dimensions: 24″W x 24″D x 8″H Curbside delivery include with purchase. White Glove delivery option available. Please call Customer Service at 1-877-663-2224 for more information. Maximizing durability, minimizing Impact. The PCHseries was designed to be a modern classic, one that would outlive trendy aesthetics or cheap construction. Where many other comparable products may deteriorate or fall out of style over time, the PCHseries uses superior craftsmanship, the highest of quality materials, and clean simple lines to ensure longevity and sustainability. What started simply as a design initiative and dedication to quality has tbecome our furnitue lines most environmentally friendly feature — its ability to last decades and substantially minimize the resources that would be invested to frequently replace it.

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LAXSeries Night Table

Our night table provides cable management and its moveable inside divider allows for unsightly plugs etc. to be hidden from sight. A perfect companion to our platform or storage beds, it is made from solid English walnut. Features: Natural oil finish

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Our night table provides cable management and its moveable inside divider allows for unsightly plugs etc. to be hidden from sight. A perfect companion to our platform or storage beds, it is made from solid English walnut. Features: Natural oil finish Solid English wanut 17.75″ W x 18″ D x 12″ H Cleaning: Condition wood surfaces periodically as needed with boiled linseed oil, first applying evenly to all wood surfaces with a clean, dry, cloth, and wiping off any excess after approximately 15 minutes of curing using a second, clean dry cloth.

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The Night Before Christmas

Written one Christmas Eve and first published anonymously in 1823, this perennial classic was intended to be a gift from a father to his children. Instead, it has become a gift to the world. This Classic Illustrated Edition features the original text and

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Written one Christmas Eve and first published anonymously in 1823, this perennial classic was intended to be a gift from a father to his children. Instead, it has become a gift to the world. This Classic Illustrated Edition features the original text and beautiful reproductions of works by some of the most notable illustrators of the nineteenth and twentieth centuries. This board book edition now brings the classic poem into a format perfect for the smallest hands.

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