Caloric Restriction In Sarcoma Patients Treated With Pre-Operative RT

The goal is to decrease the chance of having wound complications after surgery. Caloric Restriction has been found to be a natural modifier of surgical outcomes. Participants will be randomize into the arms Caloric Restriction Diet or Normal Diet.

Inclusion criteria

• Age >18 years
• Biopsy proven soft tissue sarcoma located in the lower extremities
• Patient to be treated with radiation therapy for a primary lower extremity soft tissue sarcoma or recurrent tumor after surgery, followed by surgical resection
• Karnofsky Score ≥ 60%
• Body Mass Index (BMI) ≥ 20 kg/m2
• Protein levels within normal limits within 45 days of enrollment
• Normal kidney and liver function within 45 days of enrollment
• Normal blood counts within 45 days of enrollment
• Normal chemistries within 45 days of enrollment

Exclusion criteria

• Current pregnancy and breast feeding
• Other cancers diagnosed within the last 5 years (in situ and/or invasive)
• Diabetes mellitus
• Current metformin therapy
• Other conditions may exclude participants from the study (e.g. intractable nausea/emesis, allergic reaction to shake, patient decides not to have surgery, any medical condition that prevents patient from having surgery)