The inspiration is derived from this statement from the Baha'i Writings:
"The science of medicine is still in a condition of infancy; it has not reached maturity. But when it has reached this point, cures will be performed by things which are not repulsive to the smell and taste of man--that is to say, by aliments, fruits and vegetables which are agreeable to the taste and have an agreeable smell."1
1 Some Answered Questions p 256 by Abdu'l Baha, first published in 1908.
Further passages from the Baha'i writings:
"It is the function of a skilled physician to determine which constituent of his patient's body hath suffered diminution, which hath been augmented. Once he hath discovered this, he must prescribe a food containing the diminished element in considerable amounts, to re-establish the body's essential equilibrium. The patient, once his constitution is again in balance, will be rid of his disease.
..... When the constitution is in a state of equilibrium, there is no doubt that whatever is relished will be beneficial to health. Observe how an animal will graze in a field where there are a hundred thousand kinds of herbs and grasses, and how, with its sense of smell, it snuffeth up the odours of the plants, and tasteth them with its sense of taste; then it consumeth whatever herb is pleasurable to these senses, and benefiteth therefrom. Were it not for this power of selectivity, the animals would all be dead in a single day; for there are a great many poisonous plants, and animals know nothing of the pharmacopoeia. At whatever time highly-skilled physicians shall have developed the healing of illnesses by means of foods, and shall make provision for simple foods, and shall prohibit humankind from living as slaves to their lustful appetites, it is certain that the incidence of chronic and diversified illnesses will abate, and the general health of all mankind will be much improved. This is destined to come about.
..... At whatever time highly-skilled physicians shall have developed the healing of illnesses by means of foods, and shall make provision for simple foods, and shall prohibit humankind from living as slaves to their lustful appetites, it is certain that the incidence of chronic and diversified illnesses will abate, and the general health of all mankind will be much improved. This is destined to come about. "
Selections From the Writings of `Abdu'l-Bahá