Hello, and thank you for your question regarding whether a full tummy tuck will help tighten your chest or pectoral area. First, congratulations on your incredible 100-pound weight loss — that’s a major accomplishment, especially at just 19 years old. You’ve clearly put in the hard work to transform your body and improve your health. To answer your question: a full tummy tuck (abdominoplasty) is designed to remove excess skin and fat from the lower and upper abdomen, tighten the abdominal muscles (rectus abdominis), and reposition the belly button. While it does tighten the upper abdomen, it does not address the chest or pectoral region directly. If you're noticing loose skin or fullness in your chest, especially after major weight loss, that is most often treated with a male chest lift (gynecomastia surgery). This procedure may include: Excision of excess skin Removal of glandular tissue or stubborn fat Repositioning of the nipple-areola complex, if needed Since you're young and your skin may still have some elasticity, it's possible your chest skin could retract a little more over time — especially if you continue to train your chest muscles. But if you're left with sagging skin or enlarged breast tissue, that won’t be improved by a tummy tuck alone. If the appearance of your chest still bothers you after your tummy tuck, you may want to discuss gynecomastia correction or chest contouring with your plastic surgeon as a separate procedure, either staged later or combined if safe to do so. Keep up the great work and continue your journey toward feeling your best — you’ve already achieved something incredible. Sincerely, Dr. J. Timothy Katzen, MD, MBA, FASMBS, FICS (Certified by the American Board of Plastic Surgery and President of the American Board of Bariatric Plastic Surgeons)