a, Distribution of TG species for the switch at young (left) and old (right) age classified according to the number of carbon atoms as proxy for TG-associated fatty acid chain length. Values represent normalized relative abundances (0-100%) on a logarithmic scale. b, Selected TG groups classified according to associated fatty acid chain length. Values are identical to the ones in a. One-way ANOVA followed by two-sided post-hoc Tukey test. c, Distribution of TG species for the switch at (left) young and (right) old age classified according to the number of double bonds in TG-associated fatty acid chains. Values represent normalized relative abundances (0-100%) on a logarithmic scale. d, Selected TG groups classified according to the number of double bonds in associated fatty acids. Values are identical to the ones in c. One-way ANOVA followed by two-sided post-hoc Tukey test. Biologically independent animals used for Lipidomics: n=4 per diet. Means ± SEM, *** p<0.001.