sperm morphology

trying to figure out my test results. i'm 37 in good shape. 2 kids already without any problem conceiving. 3rd hasnt been quite so easy. my test results were all normal except for morphology wich was 3%. what does this mean and is this the reason that we're having trouble conceiving (i know it's probably more complicated than that). are there supplements or anything to take (non prescription)?

[John Kim, M.D.]

You need to have two abnormal semen analysis at least 70 days apart to diagnose an abnormal semen analysis.  Also to determine abnormal morphology, it must be done by strict criteria or kruger critera.  
To improve semen analysis you should avoid heat (like hot tubs and sauna), smoking and alcohol. You can take a multivitamin for men like One a Day for Nen which contains antioxidants like vitamins A, C, E, selenium and zinc.  You can take supplement like FertilityBlend for Men which contains the above antioxidants including ferrulic acid, green tea extract and L-carnitine.