We always recommend consulting your doctor before you try a new therapy like Varène Beauty Ultrasound Cavitation. You should avoid using the device if any of the following conditions apply to you: - Diabetes - Severe kidney or liver disease - High cholesterol or heart disease - High fever, blood vessel disease or arteriosclerosis - Metal implants or electrical devices eg. metal hip joints, pacemakers, plates, pins, staples - Metal IUD’s (Intrauterine devices) unless confirmed to be plastic such as the later models of the Mirena- Pregnant and/or lactating women