Dear Lam,
I'm happy to receive your letter and rather quite relieved that you finally consulted a professional to help you out as these kinds of disorders, if not treated properly, can be incredibly damaging to one's life.
Firstly, I want you not to be afraid and overreacting about this eating disorder simply because it is actually more common than you think. What you have is called lactose intolerant and about 60% of the population fall victim to this disorder. In your demographic, Asians, that number rises to an staggering 90%. Due to its commonality, it is easily diagnosable and treated. Secondly however, I do have to unfortunately say that albeit it is treatable, it it incurable because of its nature. Lactose intolerant is embedded in our genome structure that has formed and evolved over thousands of years, therefore it cannot be eradicated. Fortunately, nowadays science has progressed far enough for there to be a plethora of alternative options for calcium intake besides from milk. You can get calcium from using prescription drugs such as calcium supplements or cartilage pills. Exercises and a healthy diet can also be a great option for your bones to strengthen and grow without the need for enhancing drugs. Of course, when it comes to your diet, you need to avoid milk-based products and instead increase your protein per meal, this can compensate your lack of lactose. You should also try to build healthy habits such as sleeping early and have a proper posture, this will help with your bone growth and prevent you from having a hunchback. All in all, this condition is not rare and can in fact often be ignored. However, you should try your best to limit the consumption of dairy products and follow the instructions I have provided above for a happier and healthier life.
I hope that my humble reply can help one way or another. If you have any further inquiries, feel free to write to me again and I'd be more than honored to aid you. Salute and stay healthy young girl!
Yours sincerely