Leah McGrath has been a Registered Dietitian with the American Dietetic Association since 1996. She holds degrees in Speech Communications (BA-1983 West Chester University) and Human Nutrition (BS-1995 University of Maryland) and has completed course work towards a master's degree in Marketing. Additionally Leah has received certification from the Cooper Institute on Health Promotion and completed certification courses in food safety, neonatal nutrition, and as a breastfeeding consultant.

Leah completed her dietetic internship with the US Army at Walter Reed Army Medical Center in Washington, DC and then became the Chief, Clinical Dietetics at Moncrief Army Hospital, and Fort Jackson in Columbia, SC. After resigning her active duty commission in the Army, Leah worked for almost two years with the South Carolina Department of Public Health. Initially she worked as the Lead Nutritionist for the Low Country Health District; but soon became the WIC (Women, Infants, and Children) and Nutrition Director for that district.

In 2000 Leah accepted the position with Ingles Supermarkets as their Corporate Dietitian and moved to Asheville, NC where she now lives with her husband Tim Riddle. Leah McGrath is a licensed dietitian in North Carolina.