Jaiwant Rangi, MD, FACEEndocrinologist | Founder, Lower The Dose® | Speaker

STOP THE GUESSWORK: THE TRAFFIC LIGHT FRAMEWORK FOR SUPPLEMENTATION

22 Jun 2026 · 1 min

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Dr. Jaiwant Rangi breaks supplementation into three tiers: green light for measurable nutrient deficiencies that need replacement (common in aging and diabetes), yellow light for nutrients with clinical trial evidence of benefit but no deficiency, and red light for the rest. A framework to stop guessing whether a supplement actually does anything.

Chapters

So we're going to use something called traffic signal analogy. Before we talk about any specific supplement, I want to give you only the framework you need. This is the framework that I use in my clinic with my patients. It's a traffic light. Green light is fix what is missing. These are real measurable deficiencies. They are common as we age. They are even more common in diabetes. And if the level is low, we replace it. This is not supplementation. This is treatment. You would not call insulin a supplement. Replacing missing vitamin is the same idea. Yellow light is not fixing the deficiency, but now we're talking about what is the evidence out there. Is there enough evidence? These are supplements where you're not replacing something missing, you're adding something that is in clinical trial data suggests may genuinely help you.