Dr. Kenya Igarashi
Assistant Professor | Tohoku University Graduate School of Medicine
About
Lead author of Igarashi 2022, a placebo-controlled NMN trial in older Japanese men. The study reported changes in grip strength and walking speed after 250mg/day NMN over 12 weeks, making it relevant to sarcopenia and physical-function discussions.
Key contributions
- Igarashi 2022 NMN sarcopenia trial
- Older-adult grip-strength data
- Physical-frailty NMN translation
Publications in our knowledge base (2)
Every paper below is cited at least once across NMN Malaysia articles. Click any title to read the source on PubMed/DOI and see the cluster of articles that depend on its findings.
- Chronic nicotinamide mononucleotide supplementation elevates blood nicotinamide adenine dinucleotide levels and alters muscle function in healthy older men
- 12-week 250 mg/day NMN in healthy older men raised whole-blood NAD+ and altered muscle function
- Walking speed and grip strength improvements reported with morning dosing
- Population: healthy older Japanese men (not mixed-sex)
- Oral Administration of Nicotinamide Mononucleotide Is Safe and Efficiently Increases Blood Nicotinamide Adenine Dinucleotide Levels in Healthy Subjects
- Healthy adult volunteer study testing single oral NMN doses of 100 mg, 250 mg, and 500 mg
- Reported no harmful clinical symptoms after NMN administration in the study setting
- Blood NAD+ metabolites rose after oral NMN, supporting human bioavailability context
Why their work matters for Malaysian buyers
Dr. Kenya Igarashi's research forms part of the evidence base we use to evaluate NMN and NR products available in Malaysia. When we make claims about dose ranges, safety, mechanism, or efficacy on this site, those claims trace back through papers like the ones above. The Malaysian regulatory framework (NPRA notification, JAKIM halal certification) does not perform efficacy review on supplements - buyers must do their own evidence weighting. Researcher profiles help you verify that the underlying science is robust, not just marketing.
How we cite this work
Every NMN Malaysia article that depends on findings from Dr. Kenya Igarashi's lab carries an inline citation linking to a structured PubMed entry. You can verify any claim by clicking the citation and reading the source. This cited-research model is the bedrock of our editorial policy - see the 4-step review process for how we handle every health claim.
Related researchers
Browse other profiles: David Sinclair | Shinichiro Imai | Jun Yoshino | Charles Brenner | all profiles.