What Other Issues does this daith piercing help with

The Vagus Nerve tenth and the longest cranial nerve in the body. It connects our Brain to our body and can be the missing link behind depression, anxiety, stress, weight gain, chronic fatigue, breathing disorders like asthma, heartburn, I.B.S. and digestive problems, memory, TMJ, chronic inflammation, fainting, mood disorders, B12 deficiency and seizures.  Migraine and cluster headache it not just what we do this for. 
Remarkable research over the past 2 decades has revealed how important The Vagal Nerve is to the nervous system and the fight/flight, rest and repair and the freeze response. Over the years it is though the advances of the way the brain thinks have changed the primal response of the body and weakened vagal tone in humans in general.
It also has been termed the nerve of compassion and connection – stimulating telepathy, empathy, intuition and supports higher states of consciousness.
These new insights are also heralding the beginning of an exciting new field of treatment for Autism and Trauma recovery.