Depending on your body type, you might pack on muscle or lose body fat more or less easily than other women. Therefore, you may need to adjust your whey protein intake to accommodate these differences and find the nutrition regimen that works best for you. In addition, whey protein can add extra calories to your diet, leading to unintentional weight gain if you consume it in excess. Relying on whey protein as your primary source of amino acids can also deny you other essential nutrients you need as a woman, such as iron or folate. Therefore, you should only consume whey protein as a part of a healthy diet that takes your needs into consideration.