There is a lot less to love of pop princess Christina Aguilera these days. And RadarOnline.com can reveal the Beautiful singer’s recent 40lb weight loss has sparked concern among friends and health professionals. Those closest to Aguilera are said to be concerned about the potential risks associated with dramatic weight fluctuations. Aguilera’s slimmed-down figure sparked speculation she has turned to the popular weight-loss drug Ozempic, but the singer has never confirmed or denied the use of any medication. But a music insider said the constant back and forth is unhealthy. The source said: “…