A 32-year-old woman who has been on oral contraceptive pills for 5 years, developed symptoms of depression, irritability, nervousness and mental confusion. Her hemoglobin level was 8g/dl. Biochemical investigations revealed that she was excreting highly elevated concentrations of xanthurenic acid in urine. She also showed high levels of triglycerides and cholesterol in serum. All of the above are most probably related to a vitamin B6 deficiency caused by prolonged oral contraceptive use except: