My Husband Has A Low RBC Level Of 3.82 And

My husband has a low RBC level of 3.82 and a very high RBC folate of 1929 with a high Vitamin B12 level of 975, (but he's been taking that orally), plus an extremely low WBC of 2.5. A high MCV 106 and a high MCH 37.2- low neutrophils 1.0 and no monocytes. ????? He is 60 years old - no symptoms, no aches or pains, eats very very healthy, exercises daily with a 40 minute hike on hills. Until 1/2015 drank heavily, however, and then stopped completely.