Here are a few excerpts from a hundred-year-old article about vitamins and colds.
Have vitamins anything to do with one’s immunity to colds? Through some years of watching the needs of a family, in dietetics, and in nursing, I have concluded that they have.
In the days when the real necessity for raw foods was unknown, when fruits were cooked for winter serving and we used canned vegetables, colds were very common. The longing for spring and fresh things was almost irresistible. The one really well person in the house was great grandma who never left her chair, ate only what she liked, but who always had her morning orange, her cream, and fresh laid eggs. We went through many dense years, fighting through the winter, to spring.
When the children went to college, a wonderful inspiration made me insist that, while there, they ate freely of apples and oranges, to break up the concentrated diet. Soon, the young people joined Grandma in the ranks of those who took few colds.
The children have graduated, but they stick to their love for fresh fruits and salads, and quickly throw off contagion.
Abridged from American Cookery (March, 1922)