Steroids will cause things like high blood pressure and poor cholesterol levels but not varicose veins.
I would only recommend anavar for competitive female bodybuilders though. It is not for the regular gym rat type of girl.
Remember that steroids including anavar do not burn fat. This is misinformation. To burn fat you need to be in a caloric deficit and doing your cardio/training. SARMs will help if you want to use something.
I recommend this stack:
12 weeks of SR-9009, Cardarine, and N2Slin.