I had a breast lift 6 weeks ago, so can I do Crossfit exercises as I do deadlifts, pull ups, push press?

The obvious first answer is follow your Board Certified plastic surgeon's advice.  Each plastic surgeon has his or her opinion as to when any given patient, having any given surgery, can return to a full exercise regime.That being said, in my practice, 4-6 weeks usually is the turning point when wounds are considered healed sufficiently on any breast lift, allowing re-entry into the world of exercise.  Your question goes to the heart of wound healing and cosmetic surgery.  Wounds are completely healed at 6 months, 90% healed at 3 months, and 75% healed at 6 weeks.  Most plastic surgeons, myself included, believe that 75% wound healing is about the right time to begin aggressive exercising, i.e. you can start doing situps at 6 weeks after a tummy tuck.  Obviously, you won't necessarily have the same strength as you had prior to the 6 weeks layoff from working out.  I tell my patients to start slowly and let their body tell them when they can or can't go on to the next level.

First off, congratulations on taking this big step toward improving your body image, I hope you are satisfied with your results. In regards to your question, I would be cautious about jumping right into doing Crossfit exercises, as this workout is known to be more intensive. You are most likely cleared to begin light to moderate exercise at this point of your recovery, with the approval of your surgeon. Still, I would recommend that you ease into your workout plan and begin with walking/jogging before resuming Crossfit to avoid over-straining your healing body.

First of all, this question can only be answered by your surgeon.  If healing is uncomplicated, full activity is permitted in my practice at 6 weeks as long as it is performed in a secure bra.