This is DEFINATELY not a PRO-ANA forum.... Please inspire to fast for health and detrimental weightloss only. If very thin.. and fasting for a certain health reason please do so in short medically supervised fasts. Juice fasting is recommended for someone of your size and weight. And being that your not an adult yet, you do not want to mess with anything while you are still growing and developing. Short 3 day fasts will still give you an optimum health benefit. Do these fasts 3 x's a year for maintenance. But long over a month fasts is not recommended.
Again, this is NOT a pro-ana forum.
take care of your emotional, physical well being as well..