Table 1.

Plasma lipid peroxide in young, middle-aged, and older age groups (mean and SD), nmol/ml. LPO levels were measured using the TBA method [21, 22].

	20s	30s	70s	80s	100s
Male (n)	3.34 ± 1.79 (4)	4.06 ± 1.24 (8)***	3.15 ± 0.70 (11)***	2.92 ± 0.32 (5)***	1.49 ± 0.51 (30)
Female (n)	3.18 ± 0.64 (4)*	2.95 ± 0.53 (8)**	3.56 ± 0.81 (18)***	2.90 ± 0.46 (3)	1.72 ± 1.28 (109)
Total (n)	3.30 ± 1.25 (8)***	3.51 ± 1.08 (16)***	3.40 ± 0.79 (29)***	2.91 ± 0.34 (8)***	1.67 ± 1.16 (139)

Significant difference between centenarians and particular age group: *P < .05, **P < .01, ***P < .001.