Fig. 4

Aged male mice supplemented with L. reuteri strain BM36301 maintain healthy body index. a Net weight gain of mice C57BL/6 (n = 6 for male, grey bar; n = 8 for female, dark bar) fed with each L. reuteri strain for 20 week period. * indicates p = 0.040 from the t-test in comparison with the control group (male lanes 1 and 2). b Serum insulin concentration from mice fed with each L. reuteri strain as in (a). ** indicates p = 0.027 from the t-test in comparison with the control group (male lanes 1 and 3). c Serum testosterone amount from male mice fed with each L. reuteri strain as in (a). *** indicates p = 0.0025 from the t-test in comparison with the control group (lanes 1 and 2)