Uploaded November 2022 | Updated September 2026, 5 days ago
Our mission is to promote optimal nutrition through science-based education, advocacy, and research. By empowering individuals and health professionals, we aim to improve personal, public, and environmental health. The T. Colin Campbell Center for Nutrition Studies was established to extend the impact of Dr. Campbell's life-changing research findings. For decades, T. Colin Campbell, PhD, has been at the forefront of nutrition education and research. He is the co-author of the bestselling book, The China Study, and his legacy, the China Project, is one of the most comprehensive studies of health and nutrition ever conducted.
More on Dr. Campbell: nutritionstudies.org/about/dr-t-colin-campbell
Visit our website: nutritionstudies.org
Follow us on Instagram: instagram.com/nutritionstudies
Or on Facebook: facebook.com/nutritionstudies
Our mission is to promote optimal nutrition through science-based education, advocacy, and research. By empowering individuals and health professionals, we aim to improve personal, public, and environmental health. The T. Colin Campbell Center for Nutrition Studies was established to extend the impact of Dr. Campbell's life-changing research findings. For decades, T. Colin Campbell, PhD, has been at the forefront of nutrition education and research. He is the co-author of the bestselling book, The China Study, and his legacy, the China Project, is one of the most comprehensive studies of health and nutrition ever conducted.
More on Dr. Campbell: nutritionstudies.org/about/dr-t-colin-campbell
Visit our website: nutritionstudies.org
Follow us on Instagram: instagram.com/nutritionstudies
Or on Facebook: facebook.com/nutritionstudies







![Just How Large Is the Placebo Effect?
Supplement manufacturers often highlight how great their customers feel after taking their supplements, and some manufacturers report what might look like impressive findings from uncontrolled trials. How much can we trust these forms of evidence? How much of an influence might the placebo effect have?
Learn more at https://nutritionstudies.org/whole-food-supplements-is-juice-plus-good-for-you/
References
1.Lakoff A. The Right Patients for the Drug: Managing the Placebo Effect in Antidepressant Trials. BioSocieties. 2007;2(1), 57–71. doi:10.1017/s1745855207005
2. Jeste DV, Lee EE. Editorial Comment: Is the Placebo Effect Actually Increasing Over Time?. Am J Geriatr Psychiatry. 2017;25(9):1009-1011. doi:10.1016/j.jagp.2017.04.010
3. Jones BDM, Razza LB, Weissman CR, et al. Magnitude of the Placebo Response Across Treatment Modalities Used for Treatment-Resistant Depression in Adults: A Systematic Review and Meta-analysis [published correction appears in JAMA Netw Open. 2021 Dec 1;4(12):e2144993]. JAMA 4. Netw Open. 2021;4(9):e2125531. Published 2021 Sep 1. doi:10.1001/jamanetworkopen.2021.25531
Lembo A, Kelley JM, Nee J, et al. Open-label placebo vs double-blind placebo for irritable bowel syndrome: a randomized clinical trial. Pain. 2021;162(9):2428-2435. doi:10.1097/j.pain.0000000000002234 Just How Large Is the Placebo Effect?](https://i.ytimg.com/vi/It5ixr8SPdk/mqdefault.jpg)


