Is there a connection to overall health and the likelihood of developing a food allergy?

No, but....: The development of true food allergies after puberty is not common. Adults are more likely to develop food intolerances which can be annoying, but do not include the possibility of life-threatening reactions, as is possible with true food allergies. Regardless of whether it's an intolerance or allergy, the treatment is the same - you have to avoid the food(s) that bother you.

No: Individuals in very good health as well as those who don't take quite so good care of themselves or are unhealthy with other disorders or not at increased risk of developing food allergies. Most food allergies occur in children, but adults can develop new onset food allergies. The reason individuals develop food allergies is not clear. Having eczema is a risk factor for developing food allergy.