The defined task differs: brain & mood supplements supply one or more vitamins, minerals, fatty acids, amino-acid derivatives, or botanicals marketed around cognition, stress, or mood; this choice analysis category, heart health supplements, supply fatty acids, sterols, fibers, minerals, botanicals, or other ingredients marketed around cardiovascular variables.
Choosing well requires attention to different mechanisms. For brain & mood supplements, examine active ingredient and standardized extract; for heart health supplements, examine cardiovascular endpoint and formulation. Extra capabilities come later, after the direct job is understood.