Overweight infants and children are at an increased risk of developing type 2 diabetes, high blood pressure, high cholesterol, and severe asthma. This is because excess weight puts strain on the body's systems and can lead to insulin resistance, elevated blood pressure, and abnormal cholesterol levels. Additionally, excess weight can contribute to inflammation in the airways, making asthma symptoms more severe. Therefore, all of the mentioned conditions are more likely to occur in overweight infants and children.