I suffered severe osteopenia since my 30's (typical scenario for people with gluten intolerance or celiac disease and consuming gluten and animal protein) but even on a strict vegan, gluten free diet with 1200 mg Calcium daily and vitamin D3 supplements, my bone density made little change. That is until I researched vitamin MK-7. I have been taking 2 a day for the past 15 months, and my recent bone density scan showed a 25% improvement in bone density. Yes, I am growing healthy bone, and mending! Something else that I just didn't expect, but makes perfect sense, my chronic Back pain has improved. I look forward to feeling better and living a healthier, stronger life everyday thanks to MK-7 supplementation. Thee one drawback is the capsules contain gelatin. I have not found a gluten free and vegan product yet, and am not able to eat Natto daily, so this will suffice, but I sincerely wish the product were animal-product free and thus will continue my search for one that is. I highly recommend MK-7 supplements to anyone concerned with osteopenia or osteoporosis as part of your healing and repairing regimen