Yes, according to the available information, 45 kg is considered a healthy weight for a 12-year-old girl who is 1.60 meters tall.
The provided reference states: "Yes, it's okay and healthy to be 12 years old at 1.60 meters tall and weigh 45 kg. Don't worry about that stuff, you're in good shape."
It is important to note that healthy weight can vary depending on height and individual body composition, but based on this specific scenario, the weight is considered healthy.
