Did Mankind Change After the Garden of Eden?

Certainly mankind had acquired the knowledge of good and evil in the Garden. Adam and Eve’s disobedience, as evidenced by their consumption of the forbidden fruit, was what made God sad. Male and female were originally designed to live forever with God in the Garden. This rebellious act changed man’s relationship to his Creator. But did man’s biochemical makeup also change in the Garden of Eden after the fall?
It is interesting to note that most animals have the ability to produce an enzyme that creates vitamin C from sugar molecules in their own body. For this reason, animals don’t experience heart attacks and can live for many years without the attention of a doctor. It is believed that humans also had the ability to make vitamin C at one time, but eventually lost the capacity to make the essential enzyme. Whether eating of the forbidden fruit in the Garden of Eden had anything to do with this is purely conjecture. But there was obviously some reason why God forbade Adam and Eve from eating the fruit in the middle of Eden. Did the fruit biochemically change mankind forever? Vitamin C may not result in immortality, but a constant supply of vitamin C is likely to lengthen the human life span. Americans consume about 100 milligrams of vitamin C daily. One study conducted at UCLA found 300 milligrams of daily vitamin C, three times the amount provided by the average American diet, can lengthen men’s life span by six years. [Epidemiology 3: 194, 1992]
Regardless of biochemistry, man’s rebellion against God’s plan has continued throughout history. The curse of death came upon mankind. The lesson in the Garden of Eden is not about forbidden food, but about defiance and resistance against God.