Researchers are finding a connection between the brain and the gut for the aging process.....

The brain and the gut do communicate with each other.  The research in the past has focused on the gut to brain communication system, this research focused on the brain to gut system.   Some of the latest research from the University of Michigan found that cell and tissues use information from the environment-and each other- to actively coordinate the aging process.  Researchers used roundworms to find what is called the "axis of aging".  They introduced the worms to cold and warm environments in order to find out if this would effect the aging process.  They identified two different neurons that detect the warmth or coolness of the environment.  The cool environment activates the serotonin in the system and increases the longevity of the worm.  The warm environment sends insulin to the intestine, this decreases the worms longevity.  This is all regulated by a protein called DAF-16.  These signals are then sent off to the rest of the body to regulate the aging process.

If the brain is operating at an optimal level then the rest of the system will be running smoothly.  Try LENS neurofeedback, it will help with the whole system.