Sick and low levels
When your vitamin D is low, your immune system doesn't work well so you get sick more easily and it's harder to heal. What's your D level? I recommend the 50,000 IU D3 from vitalady.com. You can take it daily for a month or two if your level is really low, or just a couple times a week if it's not that low.
Please note: I AM NOT A DOCTOR. If you want medical advice, talk to your doctor. Whatever I post, there is probably some surgeon or other health care provider somewhere that disagrees with me. If you want to know what your surgeon thinks, then ask him or her. Check out my blog.