Hydrogen Water Study Tests Memory and Health in Older Adults
- Authors
- Takamitsu Shinada, Yuji Takano, Keisuke Kokubun, Hikari Iki, Yasuyuki Taki
- Journal
- Methods and Protocols
- Year
- 2021
- DOI
- 10.3390/mps4040073
- Study Type
- Human
- Outcome
- Neutral
- Peer Reviewed
- Yes
- Country
- Japan
- Health Condition
- Cognitive Decline
- Body System
- Nervous System
TL;DR
This study explores whether drinking a special type of water with active hydrogen, called natural reduced water, can improve mental abilities, body health, and mood in older adults.
Key Finding
This is a study protocol describing a planned trial; results are not yet available.
Summary
This study is testing whether natural water containing active hydrogen (a type of water found in Japan called Hita Tenryosui water) can improve thinking skills, body composition, and mood in people aged 65-74. Researchers will have some participants drink 1 liter of this special water daily for 6 months, while others drink regular tap water, and then measure changes in their cognitive function, body composition, and psychological well-being.
Practical Takeaway
This study has not yet been completed or published with results, so there is no evidence to evaluate at this time. Once the trial is finished and results are published, it may provide early human evidence about whether hydrogen-rich water affects cognitive function or body composition in older adults—though a single 6-month study would be preliminary.
Abstract
Natural reduced water is natural water that contains active hydrogen and reduces oxidation. It is rare in the world, and in Japan, it is produced in the Hita area of Oita Prefecture (Hita Tenryosui water). Previous studies in humans have examined the effects of natural reduced water on diabetes, which is one of the known risks for dementia. Animal studies of natural reduced water have revealed anti-obesity and anti-anxiety effects. However, the effects of natural reduced water on cognitive function, body composition, and psychological function in humans are unknown. Therefore, we investigated the relationship between these items in elderly people who continuously consume natural reduced water. In this study, we recruited participants aged between 65 and 74 years. The participants were randomly and blindly assigned to a natural reduced water (Hita Tenryosui water) group or a control (tap water) group and drank 1 L of water daily for 6 months. Cognitive function, body composition, and psychological function were measured before and after the 6-month intervention period.