Welcome to the forum, Zinsong. I'm sorry that you are in a situation where you need to be here, as I think we all are! 😮 The most striking information that you provided is your Vitamin D level of 25. I would be concerned if mine were to drop that low again (I was once at 9 - yes, single digits - no wonder I have trouble now). On a recent visit with my integrative medicine practitioner, she was concerned that my D was only in the 40s. She said she wanted to see it in the 60s. She also recommended that I add K2, which Keith McCormick also discusses in his book, Great Bones (an amazing book - I wish I'd read five years ago). If you have access to an Asian food market, you might like to consider adding natto to your diet. It contains a unique type of Vitamin K that is very helpful with bone metabolism. Also consider the types of calcium you take and WHEN. I learned too late that taking my calcium with a delicious breakfast of oatmeal, blueberries, walnuts and flax seeds that was delicious and healthful, but the phytates found in whole grains, nuts and seeds latch onto the calcium and carry it out of the body before it has a chance to get into your bones. I now have a strange breakfast of a cup of kefir, a half of a banana and 1 TBSP of extra-virgin olive oil (cold pressed and unfiltered) along with 600 mg of calcium citrate. It seems that calcium needs fats to get to where we need it. I take a second 400 - 500 mg dose of calcium carbonate later in the day, usually with dinner, but I'm looking into AlgaeCal, which is supposed to be a very good form of calcium. Dr. McCormick suggests taking different types of calcium. Your body can only absorb about 500 - 600 mg at a time, so you need to take a second dose at least four hours after the first one. Also make certain that you are taking magnesium (glycinate is easiest to absorb by my understanding) and zinc, but don't take either of these when you take the calcium - apparently minerals compete with each other. Do be certain to take the other minerals with food, esp. zinc, which will make you nauseous if you take it on an empty stomach. If you're not keen on taking zinc as a pill, then choose to eat plenty of nuts and other foods that contain zinc (oysters, anyone?) Also consider taking a fish oil supplement. My IM practitioner suggested Nordic Naturals to me for that (and the K2 + Vitamin D). The kind I get from them is 'burpless' (my word). In the past, I've had fish oil that revisits me with gnarly fishy flavor. They also filter the fish oil, so it shouldn't contain any mercury (my sister developed a rash on her leg years ago from taking unfiltered fish oil. Her doctor told her she had mercury poisoning!)

When you look at Great Bones, take a look on p. 98 where he discusses the trabecular bone score (TBS). He says "...bone density by itself is not a reliable indicator for fracture risk. A combination of density and quality are what give bone its strength." One of the most important things you can do for your bone quality is to take exceptionally good care of your health, especially your digestive system, and to exercise. Ask your doctor for a referral to a physical therapist who can help you to learn how to do resistance exercises to build strength, and balance exercises to stay upright! You are still very young and, in my opinion, have a very good chance of rebuilding your bones with a diet that intentionally provides your bones what they need to rebuild. If you haven't had a CTX test (C-telopeptide), that one can give you good information on how actively your bones are working on that task (or if they're not).

CAVEAT: I'm not a medical practitioner. If anyone sees anything in this post that seems incorrect or inappropriate advice, I welcome your feedback. My goal is only to help by sharing what I've learned for myself.