While none of the possible side-effects of Deca will ever be desired by any man, fortunately each one can be avoided, and all it takes is easily within your grasp. In-order to combat such issues, the first line of defense will be an aromatase inhibitor (AI) such as Arimidex or Letrozole; an AI will protect against Gynecomastia produced by aromatase or progestin. Further, an AI will also protect against water retention and can even have a positive impact on blood pressure and cholesterol, but your diet will also play a massive role. Many men who hold water due to Deca use often do even with AI use, and in most cases, it's not the steroid's fault; they're simply eating too much, and it's more than likely too many carbohydrates. By controlling your diet and supplementing with an AI, excess water retention won't be a large concern; further, by controlling your diet, eating a blood pressure and cholesterol friendly diet these issues will be protected; assuming your blood pressure and cholesterol levels were healthy to begin with.