What does "be present" mean here?

Native speaker’s answer
Rebecca
"Is present" is similar in meaning to "exists" or "is in" here. Basically, the speaker is saying that 1 in every 100-200 people have celiac disease, that it is "present" in their bodies. Ex: Diabetes is becoming increasingly more present in children. Ex: Cancer was not detected to be present in your body. You are fully recovered!