Once you’re ready to introduce solids, usually at about 6 or 7 months, choose a rainbow of fresh foods, beginning with fruits and vegetables and building up to whole grains and proteins. Excellent early foods include bananas, sweet potatoes, butternut squash, apples, pears, carrots, and avocados. According to Greene, the only foods to avoid for safety reasons during the first year are those that could potentially  cause infections (such as honey, which can contain botulinum toxin) and ones mom avoided while pregnant (raw or high-mercury fish and soft, unpasteurized cheeses, for example). Whenever possible, spring for organic produce, which helps ensure your baby isn’t exposed to harmful pesticides or genetically modified ingredients. And try to introduce as many foods as possible before age 2 or 3, when children go through a stage called neophobia and become physically fearful of trying new foods.