Nutritive - Duke's Materia Tonica
The basis of nutrition is the essential nutrients ^ required for the human body to optimally function ^. So instead of consuming one nutrient at a time, health is best cultivated with a holistic diet of all the essential nutrients ^, that make up the nutrition required for the functioning of the body ^. But sometimes food is not enough, so nutrition must be improved through supplementation ^.
It is increasingly becoming known that food, even organically grown, is nutritionally deficient ^, and although a diet high in plants supports health ^, contrarily, for the confused, a limited scope of looking at only a few isolated nutrients will inadvertently expose common deficiencies, such as a deficiency requiring vitamin B12 supplementation ^.
These many factors contribute to deficiencies, easily causing concurrent excesses of non-nutritious foods in the diet ^, which cause the nutrient deficiencies ^ that, according to Linus Pauling, a nutritional expert ^, lead to poor health and lacking wellbeing ^.
The nutrients in food and supplements are very well researched ‡. which includes the broad range of health support from phytochemicals ^, confirming the traditional empirical understanding ^ of using whole-food tonics, superfoods and adaptogens ^.
One can learn from many different sources about nutrition and supplements.