4. Soy Milk

Soy Milk, which is often touted as a great source of potassium and protein, is often pitched as a healthy alternative to cow milk. But drinking flavoured soy milk can add up to 50 calories or more per cup. Processed soy milk may also contain high levels of goitrogens, a substance which is responsible for causing thyroid problems. So, try unsweetened almond milk or nut milk instead for fitness or weight loss.