The Claim
The oral glucose insulin sensitivity (OGIS) index demonstrates greater responsiveness to vitamin D repletion compared to fasting-based insulin sensitivity measures (HOMA-IR, QUICKI) in adults with prediabetes and hypovitaminosis D.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In adults with prediabetes and low vitamin D levels, the OGIS index changes more noticeably after vitamin D supplementation than traditional fasting blood tests like HOMA-IR or QUICKI.
See the scientific wording
The oral glucose insulin sensitivity (OGIS) index is more responsive than fasting-based insulin sensitivity measures (HOMA-IR, QUICKI) to vitamin D repletion in adults with prediabetes and hypovitaminosis D, suggesting it may be a more sensitive marker for detecting early metabolic improvements.
When vitamin D levels rise, it activates a switch in cells that makes more insulin receptors, allowing the body to take up sugar from the blood more effectively after eating, which shows up as improved sensitivity in tests that measure how the body handles sugar after a meal.
What the research says
1 studyIn people with prediabetes and low vitamin D, taking vitamin D supplements improved a special test (OGIS) that measures how well the body handles sugar after eating—better than the usual fasting blood tests. This means OGIS is more sensitive to seeing the benefits of vitamin D.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.