Supplement Statistics for 2026

By Erin Rose · Updated March 16, 2026 · Methodology

All statistics are sourced and linked. Jump to sources. If you cite these statistics, please link to this page. These are population statistics, not advice for any one person; talk to your clinician about your own needs.

Nutrient Intake and Status Statistics

• In a 2011 analysis of national survey data, 42% of US adults had vitamin D blood levels under 20 ng/mL. (Forrest & Stuhldreher, 2011)
• ~50% of Americans did not meet the RDA for magnesium from diet alone in one analysis. (Rosanoff et al., 2012)
• CDC survey data put low iron status at about 10% of the US population and about 20% of premenopausal women. (CDC Second Nutrition Report)
• Studies have reported low vitamin B12 status in 40-90% of unsupplemented vegans. (Pawlak et al., 2014)
• Over 1 billion people worldwide are estimated to have low vitamin D levels. (Frontiers in Nutrition, 2023)

Supplement Market Statistics

• The US dietary supplement market is worth $63.1 billion (2026). (Market.us)
• 77% of American adults report taking dietary supplements. (CRN Consumer Survey)
• The global supplement market is projected to reach $239 billion by 2028. (Grand View Research)
• Creatine monohydrate Amazon sales grew 65% YoY to $241M. (Glimpse)
• Electrolyte drink mix searches grew +1,986% YoY to 60K/month. (Glimpse)
• "Magnesium glycinate" search volume: 823,000/month, up 22% YoY. (Rising Trends)
• The biohacking market reached $38 billion in 2025, projected to hit $216.7B by 2035. (GlobeNewsWire)

Supplement Form Statistics

• One study reported about 4% absorption for magnesium oxide, compared with higher figures for some other forms. (Firoz et al., 2001)
• One trial reported fish oil in triglyceride form was 70% better absorbed than ethyl ester form; many labels do not state which form they use. (Neubronner et al., 2011)
• One trial found vitamin D3 raised blood levels more than D2. (Tripkovic et al., 2012)
• One study in people with low stomach acid found calcium carbonate was absorbed less than calcium citrate. (Recker, 1985, NEJM)
• One crossover study reported 72% higher absorption for CoQ10 as ubiquinol than as ubiquinone. (PMID 27128225)

Research Volume Statistics

• Creatine monohydrate has 500+ published studies, more than any other sports supplement. (ISSN Position Stand)
• The VITAL trial enrolled 25,871 participants. (Manson et al., 2019)
• The AGA recommends against probiotics for most digestive conditions; evidence is strain-specific, not CFU-based. (AGA 2020 Guidelines)

Consumer Behavior Statistics

• 1 in 4 adults under 30 now use AI for health information. (KFF Poll, 2025)
• 38% of consumers think all probiotic forms are the same; the evidence is strain-specific. (Nutraceuticals World)

Other Market Statistics

• The AI in personalized nutrition market is $5.55 billion (2026), growing at 23.3% CAGR. (GII Research)
• The pet supplement market is $2.65 billion, growing 6-7% annually. (Fortune Business Insights)
• The children's supplement market is $3.6 billion, growing 7.6% annually. (Grand View Research)
• The nootropics market is $3.5 billion, growing 14-20% CAGR. (Grand View Research)
• Immune supplement sales swing from $208M/quarter in winter to $92M/quarter in summer, a 2.3x seasonal multiplier. (Crescent Edge)

Sunlight and Latitude

• Above 35°N latitude (LA to Atlanta), skin makes little to no vitamin D from November through February. (Ro Health)

NIH DSLD Database Statistics

• The NIH Dietary Supplement Label Database contains 207,000+ supplement labels. (DSLD)

Related guides

These guides cover the nutrients above. They compare label data and cost per day; they are not medical advice.

• Vitamin D supplements compared
• Magnesium supplements compared
• Iron guide
• Omega-3 supplements compared
• Creatine supplements compared
• Start here

Related Research

• Probiotics guide
• Form Quality Classifier API