Health · Supplement check
Supplement Spend Reality Check
How much goes on supplements each month, and which items have evidence strong enough to justify the cost?
What this means
No waffle. Just the number and how it was worked out.
Formula used
Spend audit + evidence tier classification across 15 common supplements
Worked example
Vitamin D, omega-3, and creatine are well-evidenced. Collagen, greens powder, and ashwagandha have limited or industry-funded evidence. The shareable number is the monthly spend on low-evidence items.
Common questions
What counts as strong evidence?
Consistent positive results in well-designed, independently-funded randomised controlled trials in relevant populations. Vitamin D (especially in deficiency), omega-3 (cardiovascular and cognitive benefits), creatine (athletic performance), and B12 (in deficiency) meet this standard. The bar is higher than most supplement marketing suggests.
Does low evidence mean a supplement doesn't work?
Not necessarily — it means the evidence for it working is weak, inconsistent, or primarily from poor-quality studies. Some low-evidence supplements may work in ways we have not yet captured in trials. The category tells you what the science currently supports, not a definitive verdict on whether you personally benefit.
Plain-English summary
The result summary for this calculator will live here.
This section translates the result into a short, direct takeaway rather than leaving the page at a bare number.
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