Intake of Phytonutrients: Just how much?

Candace F. McDaniel, D.O., Ed.D.
Medical Director
Fisher Institute

 

The most persistent question asked by lay and professional persons interested in obtaining the benefits of phytonutrients being added to their diet is, “How much should I take?” This is usually complemented or followed by questions that are based on the drug or pharmaceutical paradigm for medical therapy of a disease.

Phytonutrients are not drugs. These powerful food-like substances are virtually non-toxic and do not have mechanisms of action like drugs. The free-radical scavengers, antioxidants and micronutrients in phytonutrients do not act directly. These dietary substances are utilized by the human body to support the biochemistry of regulation, defense, repair and healing. This physiology is innate and coded under the control of chromosomes with their gene sequences that through DNA operate the cells of the body to achieve normalcy or homeostasis. The amount of food to provide adequate calories for energy is recognized to vary greatly in society. The need for carbohydrates (sugars and starches), proteins, fats, minerals, and vitamins ranges widely from individual to individual. It should not be surprising that the need and response to a wide range of daily phytonutrient amounts covers a wide spectrum of requirements. Roger J. Williams’ book, “Biochemical Individuality” is a science-based book that provides a rational basis for such a premise.

If one is under the care of a physician, coordination and interaction with this professional that is familiar with the individual’s unique history and condition, should be maintained. Phytonutrients are not marketed in the United States or Canada to treat or cure a disease and do not substitute for competent medical care or treatment. If medical management is not appropriate or acceptable, or one chooses to use phytonutrients for some reason without interaction with a managing professional, one should know that the human body adapts to slow changes very well and very poorly to abrupt changes. Phytonutrients are not a substitute for good and capable medical care or a good general diet.

June 1997

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