We are NOT in control of our micronutrients and cellular signaling and that is good thing. The system is so remarkably complex and integrated that it would be like asking a deaf person to write and conduct a symphony.
Imagine you bought a sports car that cost millions and then decided to never change the oil, never take it in for service, but rather accept that all cars break down at about 70,000 miles and there is nothing you can do about it.