Determining a proper nutrition assessment can be a daunting task whether you are a nutritionist, dietitian or personal trainer. What percentage of carbohydrates, fat and protein do they eat? How can you tell if a client is lacking in certain nutrients and vitamins just by looking at them? Are they getting enough selenium, potassium or vitamin B? Are they getting too much sodium or cholesterol? And even if the client is lacking in selenium, what foods do they need to eat to make up for it?