Dr. Roizen's Nutty Rice Bucket Challenge

The Science Behind the Challenge

Move over weight, blood pressure and cholesterol! Several studies1,2,3 indicate that grip strength may predict the risk of disability and even death—literally anticipating the rate of aging—better than the traditional markers of health. Michael F. Roizen, MD, Cleveland Clinic’s Chief Wellness Officer has long been interested in how people can change their rate of aging. Doctors are still working to understand the association between grip strength and the incidence of disability and death. Actively improving grip strength may slow the rate of aging. Interesting early statistics look promising in helping medical professionals identify, track and change patient behavior to treat preventable conditions.

Citation: Dodds RM, Syddall HE, Cooper R, Benzeval M, Deary IJ, Dennison EM, et al. (2014) Grip Strength across the Life Course: Normative Data from Twelve British Studies. PLoS ONE 9(12): e113637. doi:10.1371/journal. pone.0113637

Case-fatality rates for incident cases of myocardial infarction, stroke, cancer, hospital admission for pneumonia or COPD, pneumonia, injury from a fall, and fracture, stratified by grip strength tertile.

Citation: Dr Darryl P Leong, PhD, Prof Koon K Teo, PhD, Sumathy Rangarajan, MSc, et al. Prognostic value of grip strength: findings from the Prospective Urban Rural Epidemiology (PURE) study. The Lancet Volume 386, Issue 9990, Pages 266-273 (July 2015). DOI: 10.1016/S0140-6736(14)62000-6


Portable, healthy and satisfying and they provide the body with plenty of vitamin E, manganese, copper - and are the only nut with appreciable omega-3 fatty acids. There is plenty of research supporting the many health benefits of walnuts. In studies, they were shown to decrease the risk of heart disease, stroke, impotence, mental dysfunction, wrinkles and breast cancer to name only a few. Walnuts have also been shown in studies to help reduce stress!

  1. Sasaki H, Kasagi F, Yamad M, Fujita S: Grip strength predicts cause-specific mortality in middle-aged and elderly persons. Am J Med 2007; 120:337-342. In this study of 4912 people, 1695 men and 3217 women aged 35-74 baseline, multivaried, and age adjusted relative risk of all causes of death for the highest quintile of grip strength in men was 0 .52, confidence interval .33-.80; for the age group 35-54, 0.72;and for the ages 55-64, 0.67. These relative risks held for both men and women. Multi-varied adjusted relative risk of all causes of death except external causes for each 5kg of grip strength was significantly lower, relative risk0 .89, 95% confidence interval .86-.92 for men and .87 for women.
  2. In the second study, by Gale CR, Martyn CN, Cooper C, Sayer AA: Grip Strength, body composition, and mortality. Int J Epidemiology 2007; 36:228-235, poor grip strength was associated with increased mortality from all causes, after adjustment for potential confounding factors including arm muscle area and BMI. The relative risk of death was 0.81 with 95% confidence interval .70 to .95 for all causes per standard deviation increase in grip strength. These associations remained statistically significant after further adjustment for fat free mass or percent body fat in this study of 1775 people. These multi-varied analyses included age, height, social class, smoking, reported changes in weight, daily calorie intake, physical activity, diagnosed disease at baseline and remained significan per standard deviation increase in group strength about 0 .73 in men but non significant in women.
  3. In the PURE study from 17 countries in Lancet in 2015 (Leong DP, Teo KK, Rangarajan S, Lopez-Jaramillo P, Avezum A Jr, Orlandini A, Seron P, Ahemd SH, Rosengren A, Kelishadi R, Rahman O, Swaminathan S, Igbal R, Gupta R, Lear SA, Oguz A, Yusoff K, Zatonska K, Chifamba J, Igumbar E, Mahan V, Najana RM, Gu H, Li W, Yusuf S , Lancet 2015; 386:266-73, titled Prognostic value of grip strength: findings from the Prospective Urban Rural Epidemiology Study Investigators (PURE study), 142,861 participants were enrolled including 139,621 for a 4 year follow up study. Their adjustment association between grip strength was inversely correlated with all-cause mortality for hazard ratio per 5kg reduction of grip strength of 1.16.
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