The need to go to the toilet at night is a sign of high blood pressure.
A Japanese study indicates that if you need to urinate at night, this is called nocturia, you may have high blood pressure and/or excess fluid in your body. If you continue to have nocturia, ask your doctor to check your blood pressure. Also, watch your salt intake.
High salt intake associated with the urge to urinate at night
Previous research conducted in Japan found that high salt intake is associated with nocturia. Compared to Western countries, the Japanese eat more salt and are more likely to be “salt sensitive”, which means that their blood pressure rises more when they consume it. Together, these two factors mean that the Japanese have a higher risk of suffering from high blood pressure.
Blood pressure-nocturia: a significant association
This study investigated the link between nocturia and hypertension in the general Japanese population. It was carried out on 2017 residents of Watari who underwent an annual health check-up in 2017. Blood pressure was measured and information on nocturia was obtained by questionnaire. Participants with a blood pressure of 140/69 mmHg or greater or prescribed antihypertensive medications were considered hypertensive.
Nocturia was significantly associated with hypertension. The risk of hypertension increased significantly as the number of nightly trips to the toilet per night increased.
An increase of 40 % risk of hypertension
This research found that getting up at night to urinate was linked to an increase in 10 % risk of hypertension. The more you go to the toilet, the higher the risk of hypertension.
On the 1′ 693 participants who answered the questionnaire, 1′ 140 (69%) had nocturia. The relationship can be influenced by a variety of factors, including lifestyle, salt intake, ethnicity and genetics.
Hypertension: A Global Disease
More than one billion people worldwide suffer from high blood pressure. High blood pressure is the world’s leading cause of premature death. A healthy lifestyle is also advised, including salt restriction, alcohol moderation, healthy diet, regular exercise, weight control and smoking cessation.
Tomohiro Matsuo .Daily salt intake is an independent risk factor for pollakiuria and nocturia. doi.org/.2017/iju.2017
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