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  "path": "/news/2026-03-brain-reward-energy-pleasure.html",
  "publishedAt": "2026-03-17T13:40:02.000Z",
  "site": "https://medicalxpress.com",
  "textContent": "We have long been told a simple story about reward: Dopamine is the \"wanting\" molecule that drives us toward goals, and opioids are the \"liking\" molecules that provide the hit of pleasure once we get there. But this pleasure-centric view has a major flaw, it doesn't explain why these same chemicals are active during stress, pain, or even immune responses.",
  "title": "Brain's reward system may be about energy, not pleasure, study finds"
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