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Colin Davidson

Colin Davidson

The Conversation

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Kim Kardashian’s new caffeine‑free energy drink relies on paraxanthine – here’s what the science says

Kim Kardashian’s new caffeine‑free energy drink relies on paraxanthine – here’s what the science says

Paraxanthine is the main metabolite of caffeine. Studies suggest it can boost alertness and focus, but the research base is much smaller than for...

10.03.2026 9

The Conversation

Colin Davidson

Robert F. Kennedy Jr. says antidepressants are harder to quit than heroin – is he right?

Although quitting antidepressants can cause withdrawal symptoms, they are generally less severe than those of heroin.

14.02.2025 6

The Conversation

Colin Davidson

Pharmacies sell some products that have little or no evidence of working – so why do they do it?

Pharmacies in the UK face significant cuts, so it’s perhaps not surprising that they sell many unevidenced lifestyle products.

29.01.2025 9

The Conversation

Colin Davidson