Top 5 Study Summaries for May 2024

    We summarize 150+ studies each month.

    Quiz of the week!


    Every month, we summarize 150+ recent studies for our Examine Members. You can read five of last month’s most favorited Study Summaries for free by clicking on the links below.

    The Study Summaries marked with are Editor’s Picks, which provide more details about the study, mention related studies, and include helpful graphics.

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    Morgan Pfiffner, MS
    Editor of Examine’s Study Summaries

    Quiz of the week


    Answer: Tryptophan

    The serotonin system has been implicated in symptoms of attention deficit hyperactivity disorder (ADHD). Because tryptophan is a precursor to serotonin, consuming higher levels of this amino acid may have favorable effects for adults with ADHD. However, the effects of tryptophan supplementation on symptoms of ADHD haven’t been well characterized, and a recent study found that supplementation with tryptophan had no effects on ADHD symptoms. Read more about tryptophan.