Walk down the supplement aisle and you’ll see thousands of bottles promising everything from better sleep to immunity boosting. The global supplement market is worth over $150 billion, and most of it is built on marketing, not science.
How to Read Supplement Studies
Not all studies are equal. Systematic reviews and meta-analyses combine data from multiple studies. Randomized controlled trials are the gold standard.
Vitamins and Supplements With Strong Evidence
Vitamin D3
Deficiency affects over 42% of the US population. Research shows adults over 50 who took 1,100 IU of vitamin D3 daily had a 13% reduction in all-cause mortality.
Omega-3 Fatty Acids
The evidence for omega-3s from fish oil is one of the most robust in the supplement world. Meta-analyses consistently show benefits for triglyceride reduction and heart health.
Magnesium
Approximately 50% of Americans don’t get enough magnesium. Research shows magnesium supplementation can improve sleep quality, reduce anxiety, and help manage type 2 diabetes.
Practical Recommendations
Get your blood work done, identify what you’re actually deficient in, and supplement those specific nutrients. A high-quality multivitamin is fine as insurance.