Table 1. Mean and standard deviation of Lipofuscin pigmentation between groups (P<0.05).

	First group	Second group	Third group	Fourth group
Mean	2.33	2.87	0.00	0.00
Standard Deviation	0.51	0.35	0.00	0.00

First group: Eight weeks suffered food deprivation in isolated situation.

Second group: Eight weeks suffered food deprivation but encountered to third and fourth groups (inequality situation).

Third group: Two weeks food deprivation then encountered to six weeks free access to food, not isolated.

Fourth group: Free access to food, not isolated.