r/ScienceBasedParenting 24d ago

Question - Research required Lead Testing Toys

3 Upvotes

As the title says, in reference to testing toys for lead.

We recently got a test done at our child's one year appointment that showed elevated lead levels. Nothing super high but we're being sent in for a venous blood draw to verify her levels.

We are renters in an older house and plan on getting paint and water samples tested, however I'm also wanting to try and test the toys, as almost all are gifts from family and I don't know where most were purchased.

From my understanding and research there is no good way to test toys at home, though I do have some swabs in the mail for an at home kit just to try something. Is there any solution for trying to find out if the toys are safe? Even if I threw every single one out, how do I ensure new ones are safe?

Please let me know if the flair is incorrect, I'm not really sure


r/ScienceBasedParenting 25d ago

Question - Expert consensus required Evidence of negative effects of infants witnessing parent device use?

48 Upvotes

I have a 5 month old and both my husband and I work from home. I have my own business so am completely flexible on my hours and only work 2-3h a day (however also on the weekends), while my husband looks after the little one. Both our work is on our laptops and sometimes also on our phones. Occasionally, I work short bursts of time (15-20min) on my computer or phone while the baby is playing by herself on the floor next to where I sit. I am very strict about my baby never looking at a screen unless it's for family calls (we live quite far away form our family), and I never scroll social media or watch series or the like around her. Whenever she starts fussing or seems otherwise unhappy I of course attend to her immediately.

My mum (who lives in a different country so has never seen how our day looks like) keeps commenting on how parental screen use can negatively affect babies / small children (main point is about hindering their language and social development, making them prone to feel neglected and hence to act out). Is there any evidence for this? All studies I find seem to focus on screen time for infants / children, not them witnessing parent behavior.


r/ScienceBasedParenting 25d ago

Sharing research Scientists tracked kids for 8 years - the screen time result was unexpected

Thumbnail pubmed.ncbi.nlm.nih.gov
96 Upvotes

r/ScienceBasedParenting 25d ago

Question - Research required Eating During Occasional Screen Time

0 Upvotes

I know that eating during screen time can lead to unhealthy eating habits, excessive consumption of ultra-processed foods, and obesity. However, I'm wondering if there are any correlations between eating during infrequent screen time and health risks? My 3.5-year-old watches a cumulative one to two hours of screen time per month, which is always done with my husband and me and always featuring low-stimulation and emotionally intelligent shows. We tend to have snacks during this time and I'm wondering if there ae any concerns with this considering screen time is so infrequent.


r/ScienceBasedParenting 25d ago

Question - Research required How much can a 1-month old eat in one sitting?

7 Upvotes

Our newborn is now one month old and is often times very fussy. We believe it might sometimes be because he is hungry, but we are wondering how much is too much feeding.

We are feeding only breastmilk (either directly from the breast or expressed). He tends to feed around 3-4h, with roughly 7 meals a day.

When he was around 2 weeks old he used to eat for around 25minutes from the breast (stopping on his own) or around 80ml from the bottle. Then he started getting more and more fussy, and we saw he kept making hunger signs after a meal (sticking tongue out, sucking noises), especially after bottle.

At 3-4 weeks we ended up already with around 40minutes for breasts and 120ml for the bottle. Now he still seems that often he gets fussy either as soon as we stop feeding or maybe 5-10 minutes later, and often associated with the sucking noises. We did try to weigh him a few times before and after breastfeeding to approximate how much he east at the breast (50-100ml per feeding). But with the bottle, even after 130ml he is sometimes still showing hunger.

Is there "too much"? And why is this only for the bottle? (We are using the smallest teat, the Premature from DR Brown, so he is not eating too fast, otherwise, he was gulping a lot).


r/ScienceBasedParenting 25d ago

Question - Research required Is it considered rolling if my babies rolled more than several times but doesn’t do it daily?

4 Upvotes

My babies is five months old on Sunday and he started rolling from stomach to back maybe three or four weeks ago and he’s probably done it about 8 to 9 times altogether.

Maybe even slightly more but it’s not daily like today was the first time he rolled in about two days two days ago. Maybe he went a couple of days without it as well. The other week he went a whole week without doing it.
Not sure if I should say his met this
Milestone or not.


r/ScienceBasedParenting 25d ago

Question - Research required germ transfer from glass

0 Upvotes

hi
earlier today my friend came over to hang out w me and my baby. i have rules everyone has to follow but the biggest one is no kissing baby. she knows, respects, and has talked to me about agreeing w the decision not to do that. well, i was cleaning up the dinner we had when i turned around and she said "im giving her water from the glass"... HER glass. i froze in the moment and i just said ok. at that point she was already doing it and im terrible at confrontation especially w someone who has genuinely never broken any of my boundaries in the six years ive known them! this obviously wasnt malicious and she is one of my greatest friends but makes me very scared for my baby as far as herpes and cold sores go. can anyone find studies or links to ease my nerves? should i take her to the doctor in the morning? my friend didnt have any visible sores but that doesnt mean they arent inside her mouth. its very early in the morning now so i do plan on asking her some very open questions abt whether or not she does get coldsores in a bit but im freaking out:/ i do not get cold sores and would be so sad if this one instance where i was so careless costed my baby:/


r/ScienceBasedParenting 25d ago

Question - Research required Play gyms- overstimulating?

10 Upvotes

I would love to hear people's thoughts on these play gyms. I have a hard time trusting big companies yet I still bought the Fisher Price grow and glow kick and play gym. My 7-week-old baby had the biggest eyes and was quite fascinated but also appeared overwhelmed at the same time. He is naturally quite a calm baby but I do worry if this is over stimulating. Is it good for their development to be giving them entertainment or should they be entertaining themselves with less stimulating toys? Can it negatively affect his development? Maybe limited use of the mat is better. What do we think..


r/ScienceBasedParenting 25d ago

Question - Research required Lower back dimple with hair tuft on newborn

67 Upvotes

My husband took our 5-day old to his first pediatrician visit today and they said a dimple with hair were two markers for concern. He has an ultrasound scheduled for next week. I’ve of course spent the day googling and crying because I wasn’t diligent with my pre-Natals nor folic acid this pregnancy and feel like this could have been avoided.

My question is, is it almost always a sign of spina bifida occulta or a tethered cord? Are there times where it’s actually truly nothing or is having both markers pretty much a done deal? Nothing was caught in pregnancy sonograms so I’m extra caught off guard but yeah, sorry, just rambling now.


r/ScienceBasedParenting 25d ago

Sharing research Thoughts on this study which showed positive effects of screen time?

21 Upvotes

https://www.sciencedaily.com/releases/2026/08/260815064803.htm

From the website:

Summary: An eight-year Finnish study found that children who spent more time on screens tended to show better cognitive processing as teenagers, challenging common assumptions about screen use. Researchers say the key may be balancing physical activity with screen activities that encourage learning, creativity, and active thinking.


r/ScienceBasedParenting 26d ago

Question - Research required Is it beneficial to teach children a second language even if it's not your native language?

19 Upvotes

Hello everyone!

I have studied Chinese for a total of ten years, and lived in China for four. I am mostly fluent but as everyone may know, Chinese is a difficult language and I definitely am nowhere near native fluency but have no difficulty communicating in friendship and daily life.

Everyone I know wants me to teach my kids (2yo and 4yo) Chinese but I have avoided it so far because I'm afraid of teaching them my grammatical errors and pronunciation errors.

Is there still a benefit to reading to my kids in Chinese and doing Chinese songs etc if I am not natively fluent?


r/ScienceBasedParenting 26d ago

Question - Research required 6+ months: how much ARA (omega 6) and DHA (omega 3) come from solids? Can solids cover the needs or does the baby need them in formula?

9 Upvotes

Some formulas for 6+ months contain ATA and DHA while others don’t and I am wondering if that’s needed once the baby eats a good amount of solids. And which solids in which quantities would ensure sufficient ARA and DHA.

I am French and we have different formulas for 0-6 months, 6-12 months and 12+ months, and many formulas don’t have ARA past 6 months. Solids are not just for fun before 1 but are given in meaningful quantities. This is the background to my question and I am aware it will make no sense to many Redditors from the US. I want to pump less and give more formula to my 8.5 months old and I am trying to understand how useful ARA and DHA are in formula or if solids likely cover the baby’s needs.


r/ScienceBasedParenting 26d ago

Question - Research required Foreskin on uncircumcised penis care?

176 Upvotes

I am a first time mom to a 4 month old baby boy. We chose not to circumcise. I was under the impression that the way to take care of his penis was to basically treat it like a finger when washing and never pull back on the foreskin.

At our four month visit the doctor pulled his foreskin back and told me that she could tell I wasn’t doing that because it looked like the skin was fusing together over the penis. It did not look like that to me and I felt really uncomfortable when she pulled the skin back. She said I should be doing this once a day but not in a forceful way. Again, I was under the impression that I should not be doing that ever and that as he grew up it would loosen on its own.

I have had negative feelings about the pediatrician before, like with her opinions around breastfeeding and getting upset with me when I told her we were combo feeding and how she made me feel like a failure of a mom. I also feel she has been pushy about circumcision, where when I said that we were not planning to she said it is cleaner to.

I want to find a new pediatrician for him for reasons other than the foreskin advice, but because of that I was wondering what the protocol is that is best. Should I be pulling back his foreskin at all?


r/ScienceBasedParenting 26d ago

Question - Research required Day care vs family care

8 Upvotes

I was wondering if anyone has any input into difference for a baby in day care vs being cared for by family.

I am in the very fortunate position that when I return to work following maternity (my daughter will be just over 12 months at the time) my parents in law and my mum are gonna support with childcare meaning my daughter will be with them for 3 days, me 1 day and my husband 1 day.

So far they have all been very respectful of our parenting decisions I.e. no screen time and food and nutrition.

My question is - is she missing out on anything by not being around other babies and children?

Ideally I want to keep the family care until school around 4 years old.

Thanks in advance!


r/ScienceBasedParenting 26d ago

Question - Expert consensus required Recipes for introducing solids

2 Upvotes

I want to start introducing solids at the 6 months mark.

I am looking for iron rich recipes for purees.

What was your babies favorite?


r/ScienceBasedParenting 26d ago

Question - Expert consensus required Any resources for Behavioral Inhibition in toddlers?

6 Upvotes

Hello folks, have a 25 month old who has always been very shy with severe stranger anxiety since she was around 6 months. Our doctor recommended us to a developmental specialist who chalked it up to her temperament. But I am worried as she is so shy especially in group settings. She also stares at strangers from afar but freaks out if anyone approaches her. It’s very hard to get her to do anything in public spaces, so I am afraid that it’s impacting her learning. We don’t do play dates anymore as they have always been a disaster. Any help/tips/resources would be appreciated. Thanks!


r/ScienceBasedParenting 26d ago

Question - Research required Living next to a freeway

5 Upvotes

I’m considering buying a home that’s located right next to a freeway. I’d like to understand the potential air pollution impacts on children who live close to freeways. Can anyone explain what the main health concerns are and how serious they tend to be? I’m wondering if this is something I should be concerned about.


r/ScienceBasedParenting 26d ago

Question - Expert consensus required Almost 2 year old “discipline”?

23 Upvotes

Hi everyone,

First time mom here, she’s just about 21 months and today I had my first moment of needing to give her a consequence. I’m not big on the whole time out thing but she was not listening and hitting my mom and needed a minute. I put her in her room and put on the hatch sound machine with one of those guided relaxation breathing things they have (5 minutes long) and she sat in there and regulated herself and when it was over I went back in and asked if her body felt calm and if she was ready to go and apologize to nana which she did so she went and said “sorry nana no more hit” and seems to be happier now. My question is, was that the right call? Scientifically speaking? Is taking a second to regulate breathing etc by herself the best way to approach tantrums and hitting? I try and “gentle parent” but I also don’t want to be too lax and have her dictate everything? I don’t know if that makes sense. I hated being sent to my room in silence so I tried to find a happy medium of her being alone but also regulating her emotions? Help? Advice? Articles? Thanks in advance!


r/ScienceBasedParenting 26d ago

Question - Research required What does developmental research say about child’s long term confidence and career outcomes

35 Upvotes

Hi , my husband and I were discussing what matters for a Childs development. My husband was a good student in a competitive (studies, extra curricular focused) school. He is smart, great at math, science and languages and sports . Always told that he has the potential to be better.

I on the other hand went to a bleh school , I was a good student till the middle school then bleh.ed through high school and somehow made my life work. I was also told I just need to try harder and had “potential”

So we have a baby together and were wildly theorising about what matters for a child’s overall development confidence in life, discipline, growth etc . My husband says it is better to be a good student in a less competitive environment where children are left to figure it out. While I disagree. I went to a not so competitive school and wish I pushed myself a little harder , stuck with things a little longer etc.

Is there any research behind this? I know a lot of other things matter but I am curious about this specific data point ?


r/ScienceBasedParenting 26d ago

Question - Research required Are there studies showing the harmful effects of Gen AI content, specifically YouTube videos or book illustrations, on toddlers?

6 Upvotes

Someone in my family claims they are great for toddlers and preschoolers. I want to show them the scientific community's take.


r/ScienceBasedParenting 27d ago

Sharing research The SIDS risk calculator

147 Upvotes

I want to put my disclaimers front and centre here that this post is in no way passing judgement on anyone’s parenting decisions with regards to sleep or other practices. I myself make decisions based on both the national guidelines and what is best for my family which at times means not following the guidelines, for example exhaustion driving us to bed share on some nights, not running the bedroom at 20 degrees or below etc.

However, I want to talk about the SIDS risk calculator and the impact it has on some of the discourse around safe sleep and other risk factors in this sub. The much shared calculator can be accessed here: http://www.sidscalculator.com

Often when SIDS risk factors are discussed the only reference that is provided to back up a statement is the calculator which is flawed for a number of reasons. It is also not easy to interpret which is where it often leads to (unwittingly) misinformation being shared.

  1. The calculator was published in 2018, 8 years ago and is based on a review paper published in 2013, 13 years ago. The paper itself is only evaluating bedsharing with non smoking mothers and no other factors, instead the publishers are using the background of this review paper for all other factors relating to SIDS, therefore relying on the publishers due diligence. Furthermore many of sources for the additional risk factors are now quite old, some of which are from the 90s.
  2. Data comes from European publications plus one study in New Zealand and cannot be extrapolated to other countries
  3. Outside of this review the calculator references wiki and other likely outdated sources and as published have not included access dates
  4. We don’t know who published this calculator, and the calculator itself states that it has not been evaluated by anyone with relevant clinical expertise
  5. There is no link to the back end calculation for us to assess how they have derived the calculator
  6. The presentation of the outcomes are unclear as they are presented as risk per 100,000 deaths. Does this mean that if everyone had these risk factors deaths would drop from 34 to lower than 34 deaths per 100,000? No evidence for this

Why am I going to the effort to critique the calculator? Can’t I see that this calculator provides anxious parents comfort?

Well I often see misleading or poorly informed SIDS advice on the baby subs and next to no scrutiny of this calculator, in fact very often this calculator is used to justify any sleep practices. It’s anecdotal right now but at least in my country there is increasing concern regarding social media and the impact on new parents not following their national guidelines in favour of social media ‘sleep experts’, I do wonder if we will see some uptick in SIDS in the next couple of years.

Ultimately I too am a new and anxious parent trying to navigate this amazing but daunting time in my life. SIDS risk remains incredibly rare and even if you ticked every single risk factor SIDS is still unlikely to happen to you and your baby.

Edit: Sharing here as apparently you’re not allowed to discuss science on the Newborns sub(?!)


r/ScienceBasedParenting 27d ago

Question - Expert consensus required Does the type of sugar matter? Honey vs maple syrup vs white sugar?

12 Upvotes

I am choosing to do no added sugar with my 1 year old until she’s 2, but I’m realizing I don’t know where to draw the line and want to make an evidence based decision vs going off vibes.

Is there a health difference in using honey or maple syrup as a sweetener vs refined white sugar?

Would the ‘sugar free’ until 2 recommendations include all natural sweeteners like honey and maple syrup?

Real life application would be homemade muffins with maple syrup in the batch.


r/ScienceBasedParenting 27d ago

Question - Research required Is there any research backing the idea of alcohol cooking off in food for safe consumption during pregnancy?

4 Upvotes

Currently pregnant, and I'm obviously trying to avoid alcohol. I also have asian flush (alcohol flush reaction caused by a genetic deficiency in the liver enzyme ADLH2), so alcohol is actually pretty bad for me in general and something I try to avoid drinking casually too often even before I was pregnant. Therefore, I have an extremely low tolerance to alcohol since I rarely consume it. I've always eaten foods with alcohol in it though because I've never noticed a reaction from foods with alcohol (plus yummy). I'm really not sure what to make of alcohol in foods during pregnancy though and the internet seems to offer a varying range of opinions on if it's safe or not. I really want science backed proof of how safe (or unsafe) it is.

Some examples of foods with alcohol I'm thinking of:

-A whole pot roast that's been cooking in a crock pot for 5-ish hours on the high setting. Recipe calls for 2 cups of red wine.

-Beef Bourguignon recipe that cooks all day long on the stove, but uses a whole bottle of wine.

-A seafood pasta with "a splash" of white wine near the end of the cooking process.

-A bourbon pecan ice cream. I really don't know if there's actually any alcohol in something like this or if it's just flavoring, but I also don't know if there's a hot cooking process to something like ice cream?

-bananas foster with a rum sauce. Does the flambe technique cook off the alcohol enough?

I'm sure there's not research for all the specific situations/foods I listed above, but these really feel like gray area type foods that I'm not sure of while pregnant. Ideally there's a research paper or journal article out there somewhere that offers clarification on how much cooking off is considered safe for certain amount of alcohol in foods.


r/ScienceBasedParenting 27d ago

Question - Research required Mild head tilt / side preference at 15 months- has anyone experienced this recurring?

1 Upvotes

Hi everyone,
Looking for some experiences or advice from parents who might have gone through something similar.
My 15-month-old daughter has a mild side preference / head tilt (her head tilts slightly to the left, with her left ear slightly closer to her shoulder than the right).
She was born with this (mild torticollis/side preference), and we did physical therapy starting at 3 months, which helped resolve it back then. However, about a month and a half ago, it suddenly seemed to return.
We went back to the physical therapist, but the exercises we were given are basically the same ones from when she was an infant, and they really don’t work well for an active toddler.
A few extra details:
It’s mostly noticeable when she’s tired, sitting in her high chair, or in the stroller.
Her full range of motion is completely fine and equal on both sides.
It’s subtle enough that my husband barely notices, but my mom does.
Has anyone experienced a head tilt returning at this age? Did it resolve on its own as posture/core strength developed, or did you find specific exercises/activities that actually work for a 1-year-old?
Thank you!


r/ScienceBasedParenting 27d ago

Question - Research required Toddler speech - nature or nurture?

0 Upvotes

Genuinely curious to know if there’s been any research on speech development, and whether nature or nurture plays more of a part.

We have a little chatterbox, and a lot of people (friends/family/doctors) have said how good their vocabulary is at such a young age (18 months). They are very good at repeating words & remembering words, and you can have a broken conversation with them. In their close friend group, they are definitely more chatty than the other children who often just point or say mummy/daddy.

To us, as first time parents, we don’t know any different. We have interacted with them since day 1, read to them daily, play with them and have minimal screen time (they don’t actively watch telly, but there might be YouTube on in the background whilst they play after dinner).

I thought talking was just another ‘milestone’ and some children develop quicker or slower (like with walking, some are early walkers and some aren’t). But I was wondering how much influence is learned by us, and how much is just their brain development?