Supplements can be important, but it depends on the individual and their specific needs. One crucial factor to consider when buying supplements is third-party testing. Without third-party testing, there's a significant chance that the supplement may not contain what it claims or could have harmful substances. Numerous studies have shown the prevalence of misleading or contaminated supplements. However, it's essential to address nutrient deficiencies first, as filling those gaps can have a significant impact. Whole foods should always be the primary source of nutrients, but supplementation can be beneficial if necessary. Remember, supplements are like the air filter in a car's engine—they can make a difference, but they're not the turbocharger. Prioritize diet, exercise, sleep, and lifestyle factors for optimal results.