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Online and offline, we are surrounded by recommendations on how to improve our health and extend our longevity. Ideally, this health advice is grounded in science. Health psychology plays a distinct role, complimenting research in public health and epidemiology to improve practical insights.
LLM agents can now pass as human participants, threatening the validity of online social science. We urge a shift from ad-hoc checks to multi-layered, adaptive defenses, borrowing from internet anti-bot practice, and call for cooperation across researchers, platforms, and institutions, to guard against this challenge.
