Research2025 · meta-analysis
Do probiotics affect feelings of anxiety and mood? What 6 studies showanxietymood
anxiety
A little better life, from the day you arrive.
hintl scores health and beauty choices by the strength of the published research behind them.
Based on published researchEvidence ScorePrimary studies linked
Research data last updated October 5, 2026 · 6 scores updated in the last 7 days (as of October 6, 2026)
STEP 1
What would you like to improve?
STEP 2
For “Sleep”, what specifically concerns you?
Explore this1 minute · free · no signup
Related to what you picked
Sleep > sleep qualitySame topic, very different evidence
Even within one topic, how strongly the research backs each option varies widely. Here's what the numbers show.
Featured research
Research2024 · systematic review
Can Magnesium Affect Sleep Quality? What Three Studies Suggestsleep onset latencysleep quality
sleep quality
Research2012 · randomized controlled trial (RCT)
Does Hops Improve Sleep Quality? What One Study Suggestssleep quality
sleep quality
Research2013 · randomized controlled trial (RCT)
How Does Niacinamide Relate to Skin Barrier Function? What One Study Tells UsResearch has been reported showing a positive effect on skin barrier function. The evidence score is 7, but reliability is very limited. This information is for those concerned about skin moisture retention and barrier function.
skin barrier function
skin barrier function
A little more confidence in every choice.
Research-backed information, making everyday choices a little better.
Find what's right for you