Here 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, said study author Dr Satoshi Konno, of the Division of Hypertension, Tohoku Rosai Hospital, Sendai, Japan. If you continue to have nocturia, ask your doctor to check your blood pressure and salt intake.
JCS 2019 takes place from 29 to 31 March in Yokohama. Joint scientific sessions are in the European Society of Cardiology (ESC) and JCS as part of the ESC Global Activities programme. Previous research from Japan report that high salt intake is associate with nocturia.

Anti hypertensive drugs

Compare to western countries, people in Japan eat more salt and are more likely to be salt sensitive; so meaning that their blood pressure rises more when salt is consume. Taken together, these two factors mean that people in Japan are at greater risk of developing high blood pressure.

Hence this study examine the link between nocturia and hypertension in the general Japanese population. The study enroll 3,749 residents of Watari who had an annual health check in 2017. Blood pressure was measure and information on nocturia was obtaine by questionnaire. Participants with blood pressure 140/90 mmHg or higher or prescribed antihypertensive drugs was consider as hypertensive.

Nocturia (one or more nocturia events per night) was significantly with hypertension after controlling for possible confounders (odds ratio 1.4; p<0.01). The risk of hypertension rose significantly as the number of nocturia events per night increase (p for trend <0.01). They found that getting up in the night to urinate was link to a 40% greater chance of having hypertension,” said Dr Konno.

Risk of hypertension

So the more visits to the toilet, the greater the risk of hypertension. Of the 1,882 participants who answer the questionnaire, 1,295 (69%) had nocturia. Dr Konno said the results do not prove a causal relationship between nocturia and hypertension and may not apply to populations outside Japan. The relationship may influence by various factors including lifestyle, salt intake, ethnicity, and genetic background.
Dr Mutsuo Harada, press coordinator for JCS 2019, said: Hypertension is a national disease in Japan. The average salt intake in Japan is approximately 10 g/day; which is more than double the average salt intake worldwide (4 g/day). This excessive salt intake is relate to there preference for seafood and soy sauce-base food; so salt restriction is difficult to carry out. Early detection; also management of hypertension are very important to prevent cardiovascular diseases.
So they should keep in mind that nocturia is not only cause by urinary organ problems but also by systemic diseases such as hypertension. High blood pressure is the leading global cause of premature death, accounting for almost ten 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.