Signs of malnutrition are not always weight loss, they can be physical, such as dry skin and hair, brittle nails, or sores around the mouth. They can also be psychological, including increased irritability and depression.
At the same time I was realising that walnuts are amazing I moved into a house that had a walnut tree dominating the back garden! To be honest I wasn’t that excited by walnuts in my youth. You only got