A: Yes, oxygen therapy and supplementation predate alkaline/hydrogen supplements.
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Oxygen therapy has been used in medical settings for decades, particularly for patients with respiratory conditions or those recovering from surgery.
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Oxygen supplementation in the form of oxygen-enriched products has also been around for a while, though its popularity has surged in recent years.
Alkaline and hydrogen supplements, on the other hand, gained significant attention as health trends in the past few decades. While there is some scientific research supporting their potential benefits, the evidence is less extensive and conclusive compared to oxygen therapy and supplementation.