The supplement industry has to be the biggest legal scam on the planet… With the exception of pro-hormones; all supplements are almost completely worthless and a total waste of money…
The “snake oil salesmen” of these products are very clever marketers/entrepreneurs indeed, and have mastered the art of persuading the ignorant and uninformed… Using persuasive, enticing, and over-inflated advertising, they have succeeded in convincing the masses to spend their money as a means to achieve an impossible dream…
Being so subjective that it is, there is no way to definitively prove or disprove the efficacy of these products, therefore the manufacturers and peddlers easily get away with never having to back up their claims…
For naturals, specific training applications are most important, then nutrition… For those who take enhancements, drugs are most important, training second, then nutrition… Hope this helps…