Figure 2. Fasting Serum PYY for men and women in four age groups.

Fasting PYY concentration was 15.2%, 17.1% and 11.8% greater among men than women within the <30 yrs, >30–<40 yrs, and >40–<50 yrs groups respectively (*). Additionally, the ≥50 yrs group of women had a 12.2% higher circulating level of PYY than women in the <30 yrs group (†).