Walnuts and a variety of other nuts are actually known for being quite useful in the treatment of acne. At the very least eating walnuts will most likely not have an adverse affect on your acne. Although there is the common misconception that certain foods can cause acne or make it worse, so far there is no scientific proof to confirm this.
Nuts are a very important part of a balanced diet and should be eaten regularly. Walnuts in particular have a lot of health benefits including vitamins A, E, B3, and B6. They help to keep the body healthy as a whole and even to fight off disease to a certain extent.