Lowcarb Avenue is a Frederick, Maryland bakery making low-carb breads and baked goods for people who want familiar flavor without the usual carbohydrate load. Founded by Dr. B, a nutrition, obesity and preventive-medicine specialist trained at Johns Hopkins, the business grew from bread she developed in her kitchen and shared with her patients. Its breads use clean-label, non-GMO ingredients and include naturally fermented sourdough made without artificial preservatives, resistant starches or sugar alcohols.