Uploaded December 2022 | Updated September 2026, 5 days ago
Principle #3: There are virtually no nutrients in animal-based foods that are not better provided by plants.
Eating animals is a markedly different nutritional experience from eating plants. Plant foods have dramatically more antioxidants, fiber, and minerals than animal foods. In fact, animal foods are almost completely devoid of several of these nutrients plus they have much more cholesterol and fat. Animal foods have slightly more protein than plant foods, along with more B12 and vitamin D, although the vitamin D is largely added to milk.
By definition, for a food chemical to be an essential nutrient, it must meet two requirements:
the chemical is necessary for healthy human functioning
the chemical must be something our bodies cannot make on their own, and therefore must be obtained from an outside source
One example of a chemical that is not essential is cholesterol, a component of animal-based food that is nonexistent in plant-based food. While cholesterol is essential for health, our bodies can make all that we require; so we do not need to consume any in food. Therefore, it is not an essential nutrient. There are four nutrients which animal-based foods have that plant-based foods, for the most part, do not: cholesterol and vitamins A, D, and B12. Three of these are nonessential nutrients. Cholesterol is made by our bodies naturally. Vitamin A can be readily made by our bodies from beta-carotene, and vitamin D can be readily made by our bodies simply by exposing our skin to about fifteen minutes of sunshine every couple days. It is estimated that we hold a three-year store of vitamin B12 in our bodies. If you do not eat any animal products, particularly if you are pregnant or breastfeeding, you should take a small B12 supplement regularly and consider getting tested for B12 levels.
To learn more about Dr. Campbell's 8 Principles, visit our website: nutritionstudies.org/eating-right-8-principles-food-health
Principle #3: There are virtually no nutrients in animal-based foods that are not better provided by plants.
Eating animals is a markedly different nutritional experience from eating plants. Plant foods have dramatically more antioxidants, fiber, and minerals than animal foods. In fact, animal foods are almost completely devoid of several of these nutrients plus they have much more cholesterol and fat. Animal foods have slightly more protein than plant foods, along with more B12 and vitamin D, although the vitamin D is largely added to milk.
By definition, for a food chemical to be an essential nutrient, it must meet two requirements:
the chemical is necessary for healthy human functioning
the chemical must be something our bodies cannot make on their own, and therefore must be obtained from an outside source
One example of a chemical that is not essential is cholesterol, a component of animal-based food that is nonexistent in plant-based food. While cholesterol is essential for health, our bodies can make all that we require; so we do not need to consume any in food. Therefore, it is not an essential nutrient. There are four nutrients which animal-based foods have that plant-based foods, for the most part, do not: cholesterol and vitamins A, D, and B12. Three of these are nonessential nutrients. Cholesterol is made by our bodies naturally. Vitamin A can be readily made by our bodies from beta-carotene, and vitamin D can be readily made by our bodies simply by exposing our skin to about fifteen minutes of sunshine every couple days. It is estimated that we hold a three-year store of vitamin B12 in our bodies. If you do not eat any animal products, particularly if you are pregnant or breastfeeding, you should take a small B12 supplement regularly and consider getting tested for B12 levels.
To learn more about Dr. Campbell's 8 Principles, visit our website: nutritionstudies.org/eating-right-8-principles-food-health






![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)



