Neutropenia and mild anaemia? Causes and cures?

I recently had a medical and was told that I have borderline neutropenia and borderline anemia. Has anyone any idea what might have caused this as its never been an issue before and I am very careful to eat a healthy and balanced diet. I am 27 and keep pretty fit. I did used to binge drink but have given that up completely. Any ideas? I don’t have any noticeable symptoms of anything other than people tell me I am tired more often than I should be.