Doctors do overlook simple natural solutions. This is because of how evidence-based medicine works.

The problem is not with evidence-based medicine itself, but with how the evidence is generated. The gold standard of medical evidence--a large, randomized, double-blind clinical trial--is extraordinarily expensive. In practice, much of this research is funded by private industry, which must have a reasonable expectation of earning a return on its investment. That naturally directs research toward treatments that can be patented, commercialized, and sold at a profit.

This creates a structural blind spot. Many naturally occurring compounds cannot be patented in their natural form, making it difficult to justify the enormous cost of conducting the kind of trials that modern medicine demands. As a result, potentially useful natural therapies often remain under-studied, not because they have been proven ineffective, but because the economic incentives to investigate them are weak.

This is the reason your doctor is much more likely prescribe Ambien CR than to suggest trying magnesium supplements.