This section is from the "Nature Cure: Philosophy and Practice Based on the Unity of Disease and Cure" book, by Henry Lindlahr.
Many people, when they first sit down to our table, are horrified to see how we mix fruits and vegetables in the same meal. They have been taught that it is a cardinal sin against the laws of health to do this. After they overcome their prejudice and partake heartily of the meals as we serve them, they are greatly surprised to find that these combinations of vegetables and juicy fruits are not only harmless, but agreeable and highly beneficial.
We have never been able to find any good reason why these foods should not be mixed and our experience proves that no ill effects can be traced to this practice except in very rare instances. There are a few individuals with whom the mixing of fruits and vegetables does not seem to agree. These, of course, should refrain from it. We must comply with idiosyncrasies until they are overcome by natural living.
Eating fruits only or vegetables only at one and the same meal limits the selection and combination of foods to a very considerable extent and tends to create monotony, which is not only unpleasant but injurious. The flow of saliva and of the digestive juices is greatly increased by the agreeable sight, smell and taste of appetizing food and these depend largely upon its variety.
With very few exceptions, every one of our patients (and we have in our institution as fine a collection of dyspeptics as can be found anywhere) heartily enjoys our mixed dietary and is greatly benefited by it.