Hypertension
Conditions
Interventions
A Group(Tea Group):Participants will consume Deepuer tea (total theophylline content: 3 g/day), 6 bags daily. Each bag is to be steeped in 250–500 ml of water. Total daily fluid intake from tea: 1500–
B Group(Water Group):Participants will consume purified water, 350 ml per bottle, 4-5 bottles daily. Total daily water intake: 1500~2000 ml.
Sponsors
The Third Xiangya Hospital of Central South University
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1. Stage 1 hypertension (140–159/90–99 mmHg) without antihypertensive medication use or after a 2-week washout period. 2. Age 18–80 years. 3. Urinary sodium excretion >=130 mmol/day (spot urine). 4. No history of tea or coffee consumption within the preceding 2 weeks. 5. Provided informed consent and volunteered to participate.
Exclusion criteria
Exclusion criteria: 1. Heart failure or renal failure. 2. Hypertensive patients currently taking antihypertensive medication. 3. Patients with a history of palpitations or insomnia due to consumption of coffee or strong tea. 4. Individuals with psychiatric disorders, or those unable to complete the tea/water consumption process due to personal physiological or health reasons.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Blood Pressure; | — |
Secondary
| Measure | Time frame |
|---|---|
| urinary sodium excretion;urinary caffeine excretion; | — |
Countries
China
Contacts
Public ContactNingling Sun/ Hong Yuan
Peking University People's Hospital/The Third Xiangya Hospital of Central South University
Outcome results
None listed