Chrissy Teigen and John Legend’s eldest son has been diagnosed with Type 1 Diabetes. The 38-year-old model had sparked questions from fans when she shared a photo over the weekend of older children Luna, eight, and six-year-old Miles cheering on Team USA and many noticed the little boy had a glucose monitor on his arm, and she’s now thanked her followers for their “beautiful and incredible” words of support and encouragement as she confirmed the condition, which affects the body’s ability to produce insulin. She wrote on Instagram: “A lot of you noticed something a little special about a photo…