Why Do Babies Get Hiccups?
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Q&A on swallowing air
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Why Do Babies Get Hiccups?
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Is Xylitol Dangerous?
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Q&A on food safety
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Is Xylitol Dangerous?
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Is Xylitol Dangerous?
Is Melatonin Dangerous During Pregnancy?
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Q&A on vague guidelines
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Is Melatonin Dangerous During Pregnancy?
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Are School Uniforms a Good Idea?
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Q&A on clothing
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Are School Uniforms a Good Idea?
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Wondering if uniforms are good for students? Emily Oster explores the research on school uniforms—their benefits, drawbacks, and what the data really shows.
The Hot Flash Sex Survey Results
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Some data on sex in your 40s, 50s, and beyond
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Some data on sex in your 40s, 50s, and beyond
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Sleep Survey Results: The Naps
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Where, when and how long your kids are sleeping during the day
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Where, When, and How Long Kids Sleep in Day
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How do kids’ naps really change over time? Survey data reveals when naps drop, how long they last, and why transitions are more gradual than you think.
My IUD Prevents Me From Having a Period. How Can I Tell I’m Perimenopausal?
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Q&A on Mirena
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How Can I Tell I’m Perimenopausal if My IUD Prevents Me From Having a Period?
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Are Platelet-Rich Plasma (PRP) Treatments Based on Evidence?
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Q&A on the O-Shot
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Are Platelet-Rich Plasma (PRP) Treatments Based on Evidence?
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Should I Consider Growth Hormone Treatment for My Child?
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Q&A on effectiveness and safety
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Should I Consider Growth Hormone Treatment for My Child?
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What Happens to Milk Supply When You Stop Nighttime Feeding?
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Q&A on pumping
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What Happens to Milk Supply When You Stop Nighttime Feeding?
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Should My Kid Be in a Car Seat on a Plane?
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Q&A on safety
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Should My Kid Be in a Car Seat on a Plane?
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Wondering if you should fly with an infant car seat? Emily Oster breaks down the facts and offers evidence-based advice to keep your child safe.
Can I Take AG1 While Pregnant?
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Q&A on drink supplements
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Is Athletic Greens Safe During Pregnancy?
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Can you take AG1 while pregnant? Emily Oster reviews Athletic Greens on ParentData, weighing safety concerns and what the evidence shows.
Emily Oster breaks down the evidence on greens powder in pregnancy, explaining safety, nutrients, and what expecting parents should know before adding it in.
How Accurate is Pregnancy Dating?
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Q&A on variation
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How Accurate is Pregnancy Dating?
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Is Hair Dye Dangerous During Pregnancy?
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Q&A on chemicals
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Is Hair Dye Dangerous During Pregnancy?
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Is it safe to dye your hair during pregnancy? Economist and author Emily Oster reviews the research and expert guidelines, finding no evidence that hair dye causes birth defects. Occasional use, especially after the first trimester, is considered safe—though some may choose to wait to minimize even theoretical risks.
Is It Safe to Eat Deli Meats While Pregnant?
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Q&A on cold cuts
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Is It Safe to Eat Deli Meats While Pregnant?
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How Dangerous is Sushi During Pregnancy, Really?
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Q&A on raw fish
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How Dangerous is Sushi During Pregnancy, Really?
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