An interesting note about the diet thing: the distinction is natural foods, which the Creator designed for our systems, as opposed to Man's food, which reflects his need to meddle, discount the Universe's wisdom, and make a profit on the things that we would freely receive otherwise.
It is the same with our visual intake: an hour of sunlight with a walk in nature, or an hour of "LOL!" on Facebook behind a computer screen?
Garbage in, garbage out.
LIGHT in, Light eminating
Our bodies are designed to "run" on unleaded fuel. Many of our natural immune systems and healing facilities have been seriously comprimised by the Medical Industry. To the point, in fact, that many people cannot return to a natural healing regime, because of the damage a lifetime of medication has caused.
But...we have PILLS for that.
Many common ailments...serious ones, too...are easily balanced out by a sensible diet, and the knowledge of HOW the human body operates, and what foods / herbs/ practices are designed for correction.
When God created us, EVERYTHING was taken into consideration, and provided for us. "New and improved" products only end up vindicating Soloman:
"There is nothing new under the sun."
In other words, industry, corporations and marketing cannot improve what was perfect to begin with.