Elevated LDH SGOT SGPT been on Atkins 10 months

I am a 39 year old male with a history of high cholesterol and have had large swings in body weight.  I started Atkins 10.5 months ago and have been very strict (maybe higher fat diet than ideal) and dropped from 277# to 207#.  I my annual blood tests at work showed elevated liver enzymes for the first time, levels below (after fasting).  Also, I exercise a lot, so I do take 3 Advil daily.  I am wondering if the these elevated levels are likely caused just by the diet or some other cause.  Are these numbers high enough that I should be concerned?  I intend to follow up with my doctor, but just wondering the likely causes are.

Thank you.

Glucose (mg/dL): 80
T. Protein (g/dL): 7.4
Albumin (g/dL): 4.5
Total Globulin (g/dL): 2.9
Bilirubin direct (mg/dL): 0.10
Bilirubin total (mg/dL): 0.60
Alk Phos (U/L): 82
LDH (U/L): 291
SGOT (U/L): 143
SGPT (U/L): 69
GGPT (U/L): 24
Cholesterol (mg/dL): 247
Trigylc (mg/dL): 93
LDL (mg/dL): 153.40
HDL (mg/dL): 75