Physicians in the 15th century had never heard of vitamins.
They were, nonetheless, on the right track when they recommended salads as part of a healthful diet and suggested goutweed as an additional ingredient for preventative measures.
The word “salad” dates back to the days of Caesar, when the Romans sprinkled “sal” (salt) on their salads. Long before, however, people were eating salads — or salad-type foods.
Though its beginnings are unknown, lettuce is an ancient herbal plant.