For individuals who have had cancer or are currently taking anastrozole (a hormone therapy), we strongly recommend consulting with your healthcare provider before using any body slimming or radiofrequency (RF) devices, including this 4-in-1 Cavitation Machine. Here's why: This device uses ultrasonic cavitation and RF energy, which may stimulate tissue activity. For those with a history of hormone-sensitive cancers (e.g. breast cancer), even non-invasive treatments should be approached with caution. Anastrozole affects hormone levels, and while there's no direct evidence that RF or cavitation interferes, it's essential to be extra careful. Your safety comes first — please talk to your doctor before using this type of machine. Let us know if we can help with anything else!