The one characteristic that all alternative therapies have in common is:

Question

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All alternative therapies may be different in terms of their approach or techniques, but they share a lack of sufficient evidence to prove their effectiveness. This is why they are considered "alternative" rather than mainstream therapies. While some alternative therapies may be safe, there is often limited research to support their safety as well. Additionally, they may not always complement or integrate with traditional medical care.

The One Characteristic That All Alternative Therapies Have in Common