Are there any foods that a baby under 1 year old should avoid altogether besides shellfish and honey?

No juice: Limiting or eliminating fruit juices from a baby's diet can help reduce obesity in children. Get the good habits started early.

Food Safety is #1: Biggest thing is food safety & choking risk-anything that is a piece that could lodge in an airway should be avoided--stick to small pieces of soft foods he/she can mash with his gums or swallow. Avoid peanut butter 'cause of texture--it's no longer believed age of introduction correlates to risk of allergy. But if strong family history of food allergy, there may some foods you might delay.

Infant diet: Aside from honey, there really isn't a solid scientific basis for avoidance of food in infancy. Some experts feel this may actually increase the chances of food allergy. If there is a history of confirmed food allergy in a parent or sibling, then caution may be appropriate.