The Baseline-Before-Supplement Rule
Measure what food already provides before adding a supplement
- Difficulty
- Easy
- Time to result
- ~days to results
- Steps
- 6
- Confidence
- 90%
The Baseline-Before-Supplement Rule treats supplementation as a gap-filling decision rather than a default lifestyle. Begin with the intended purpose, then inspect how much of the nutrient a normal diet already provides. Where a meaningful test exists, measure the baseline before adding anything. Next, favour compounds with a long and credible research history rather than jumping onto a new trend. Greca uses protein powder when convenient and sometimes uses creatine, but noted that her measured creatine level was already normal because she eats red meat and other food sources. A separate evidence-backed purpose, such as cognition, may still justify supplementation. The final decision remains individual: account for health conditions, monitor bodily response, and reassess rather than treating a generic dose as automatically necessary.
Origin
Greca explained why she keeps supplements minimal, uses well-researched options selectively, and checked her creatine level before deciding how much to take.
Core principles
- 01Food is the first source of nutrients when practical
- 02Supplement decisions should start with an individual baseline
- 03Long research history matters more than trendiness
- 04A normal baseline can reduce the need for supplementation
- 05Personal response and professional guidance override generic routines
How to run it
- 1
Name the purpose
Specify the nutrient gap or outcome the supplement is meant to address.
Pro tip Separate convenience, deficiency, performance, and cognition because they are different reasons.
Watch out Do not begin with a product and invent the need afterward.
- 2
Audit food sources
Review whether regular meals already provide a meaningful amount of the nutrient.
Pro tip Include recurring sources, not just one unusually good day.
Watch out Do not assume food intake is sufficient without examining it.
- 3
Check the baseline
Use an appropriate measurement when one is available and clinically meaningful.
Pro tip Discuss interpretation with a qualified professional when the marker is medical.
Watch out Not every supplement need can be reduced to one laboratory number.
- 4
Grade the evidence
Prefer options that are well researched and have been used long enough to reveal common risks.
Pro tip Treat long-term uncertainty as a real cost in the decision.
Watch out Social-media popularity is not evidence of necessity or safety.
- 5
Supplement the reason
Choose a bounded dose and product that directly serves the identified gap or purpose.
Pro tip Use the minimum that achieves the justified aim.
Watch out Underlying conditions can change the risk and require medical guidance.
- 6
Reassess
Monitor response, diet, and relevant measurements, then continue, change, or stop based on evidence.
Pro tip A supplement decision need not become permanent.
Watch out Do not ignore signs that a product is not sitting well.
In the wild
Greca checked her creatine level before supplementing and found it was already normal, which she linked to eating red meat and other dietary sources. She therefore does not treat a standard five-gram dose as automatically necessary, while still considering research on cognition.
→ Supplement use remains selective and tied to a stated purpose rather than a copied routine.
Common mistakes
Copying a standard stack
A common dose does not establish that an individual has the same baseline or purpose.
Ignoring underlying conditions
Health issues can change how a supplement should be evaluated and may require clinical oversight.
Is it for you?
Best for
It is best for generally healthy adults considering common supplements such as protein powder or creatine.
Not ideal for
It is not ideal as a substitute for medical advice, especially with kidney issues or other underlying conditions.
From the transcript
“I think if you are able to eat well and again rely on on that to get your protein and to get all of the…”
“creatine and protein powders are so well researched and have been around for so long. So, those are things that I'm not opposed to taking.”
“I also I've I've checked my levels of creatine before I even took creatine and I I never and they were perfectly fine because I…”
From the episode
Episode 467: Senada Greca: Why Women Fear Weights (And How She Built 6M Followers)
Senada Greca