Cushing’s syndrome causes excessive cortisol levels that can increase our blood pressure, leading to hypertension and also high blood sugar levels. To avoid and control hypertension, you should avoid eating: Processed foods Foods high in sodium or salt Packaged foods Fried foods Carbohydrate-rich foods like refined grains, and baked goods. Reduced sodium soups Dressing and spreads Tobacco Alcohol Weight gain and obesity are the most common effects of Cushing's syndrome, along with mood swings, muscle weakness, abnormal hair growth, osteoporosis, and menstrual abnormalities. Eating a diet high in proteins and calcium and low in sodium is highly recommended.