GPT and hydrops fetalis: ALT activity in the serum was 8.2 ± 0.6 U/L in the LF diet group, 14.6 ± 0.7 U/L in the HF diet group and 7.2 ± 0.2 U/L in the HF + LGB group indicating that lingonberry supplementation totally prevented the high-fat diet-induced increase in the serum ALT activity (p < 0.001 between the HF and HF + LGB groups and p > 0.05 between HF + LGB and LF groups).