Research Attribution

NutriSensei uses validated scientific frameworks. We acknowledge the original authors and license terms of each tool.

AHA Life's Essential 8

A validated cardiovascular health measurement tool developed by the American Heart Association assessing 8 key health behaviours and factors.

8 items·Lloyd-Jones DM et al. Circulation. 2022;146(5):e18–e43.

Blue Zones Power 9

A lifestyle assessment framework based on research into the world's longest-lived populations, examining 9 common behavioural factors.

9 items·Buettner D. The Blue Zones. National Geographic Society, 2008.

WHO Lifestyle Index

A composite lifestyle measurement instrument based on World Health Organization guidelines for physical activity, nutrition, and health risk factors.

6 items·World Health Organization. Global Action Plan for Physical Activity 2018–2030.

Tilburg Frailty Indicator (TFI)

A 15-item validated tool for multidimensional frailty measurement across physical, psychological, and social domains.

15 items·Gobbens RJ et al. J Am Med Dir Assoc. 2010;11(5):344–355.

© Gobbens et al. 2010 — Licensed under Creative Commons BY-NC 4.0 creativecommons.org/licenses/by-nc/4.0

WHO-5 Wellbeing Index

A 5-item scale used in research to measure current mental wellbeing, developed by the World Health Organization.

5 items·WHO-5 Wellbeing Index. World Health Organization, 1998.

PHQ-9 Depression Scale

A 9-item validated research instrument for assessing depressive symptom severity, widely used in clinical and epidemiological studies.

9 items·Kroenke K, Spitzer RL, Williams JB. J Gen Intern Med. 2001;16(9):606–613.

Perceived Stress Scale (PSS-4)

A 4-item research measure assessing perceived psychological stress, based on the original 14-item scale by Cohen et al.

4 items·Cohen S, Kamarck T, Mermelstein R. J Health Soc Behav. 1983;24(4):385–396.

Brief Resilience Scale

A 6-item validated scale measuring the ability to recover from stress, developed by Smith et al.

6 items·Smith BW et al. J Pers Assess. 2008;90(4):359–364.

UCLA Loneliness Scale (3-item)

A 3-item short-form research measure of perceived social isolation, based on the UCLA Loneliness Scale.

3 items·Hughes ME et al. Res Aging. 2004;26(6):655–672.

Lubben Social Network Scale (LSNS-6)

A 6-item validated instrument for measuring social isolation risk through assessment of family and friend network size and contact frequency.

6 items·Lubben J et al. Gerontology. 2006;52(1):66–74.

LET-6 Longevity Engagement Tool

A 6-item validated tool assessing engagement with longevity-oriented lifestyle behaviours across key health domains.

6 items·NutriSensei Internal Research Framework, 2024.

FRAIL Scale

A 5-item screening tool used in research to identify frailty in older adults based on fatigue, resistance, ambulation, illness, and weight loss.

5 items·Morley JE et al. J Nutr Health Aging. 2012;16(7):601–606.

All frameworks are used in non-commercial educational contexts per their respective licenses. For commercial licensing inquiries, contact legal@nutrisensei.com.