While studies show conflicting results, many large analyses and meta-analyses suggest breastfeeding, especially exclusive breastfeeding for the first six months, is associated with a lower risk or reduced odds of Autism Spectrum Disorder (ASD), with some indicating significant risk reductions (e.g., 58-76%) compared to never being breastfed, though not necessarily a direct "rate" but a risk factor. Some recent studies find that children with ASD may have shorter breastfeeding durations or lower rates of exclusive breastfeeding, suggesting a protective link, but others find no significant link after controlling for other factors, indicating the relationship is complex.
Breastfeeding has a protective effect against the risk of autism spectrum disorder. Exclusive breastfeeding has the lowest risk of autism spectrum disorder. This protective effect acts in a dose-dependent manner.
Around 90% of autism cases are attributed to genetic factors, meaning autism is highly heritable, with many different genes contributing, rather than a single cause, often interacting with environmental influences during early brain development, though specific environmental factors don't cause it but can increase risk. Twin studies show strong genetic links, with concordance rates between 60-90% in identical twins, and research points to complex interactions of many genes and prenatal/perinatal factors.
For example, breastfeeding for six months reduces ASD risk by approximately 54%, and breastfeeding extending into 12-24 months can offer the most significant decrease. Conversely, introducing solids before six months of age was associated with an increased risk of ASD, with an odds ratio of 2.455 (95% CI, 1.116–4.201).
What causes autism? Scientists have learned that there is not one thing that causes autism, but that a combination of multiple genetic and environmental factors is the usual cause. The specific genetic cause of autism can be pinpointed in approximately 15-20% of people with autism.
According to the National Institute of Environmental Health Sciences, certain environmental influences may increase autism risk:
The "6-second rule" for autism is a communication strategy where a speaker pauses for about six seconds after asking a question or giving information, giving the autistic person extra time to process it without feeling rushed, which helps reduce anxiety and allows for a more thoughtful response, reducing frustration for both parties. Instead of repeating or rephrasing, which can be confusing, you wait, and if needed, repeat the exact same words after the pause.
Relationship between breastfeeding and ASD prevalence
Among the 6049 toddlers analyzed in a recent study, only 1.2% were diagnosed with ASD. Exclusive breastfeeding was observed in 48.8% of these toddlers, while partial breastfeeding was noted in 42.2%. The remainder, constituting 9.1%, were not breastfed at all.
The 5-3-3 rule is a baby sleep training method for night weaning, suggesting a baby sleeps 5 hours after bedtime, then is fed if they wake after 3 more hours, and then sleeps another 3 hours before morning, using non-feeding soothing methods for earlier wakings to encourage longer stretches, though it's often used for older babies as a guideline for gradual feeding reduction rather than strict adherence, says Reddit users and Momcozy. It's a middle ground, allowing for comfort while reducing night feeds, but always consult a pediatrician, as it's not for newborns and should adapt to your baby's needs, say Reddit users and Momcozy.
The American Academy of Pediatrics and the World Health Organization recommend continued breastfeeding along with introducing appropriate complementary foods for up to 2 years or longer.
Changes in the diagnostic criteria and increased screening at wellness visits seem to be the main contributors.
Often children show symptoms of autism within the first year of life. A small number of children with the condition appear to develop as expected in the first year. Then between 18 and 24 months of age, they may lose some skills and develop autism symptoms.
Understanding the 6 stages of an autism meltdown can help parents, caregivers, and educators respond with empathy and support.
The "4-4-4 rule" for breast milk is a simple storage guideline: fresh milk is good for 4 hours at room temperature (up to 77°F/25°C), for 4 days in the refrigerator (39°F/4°C or colder), and up to 4-6 months (or longer) in a standard freezer (0°F/-18°C). It's a handy mnemonic, though some organizations like the CDC recommend up to 6 months in the freezer and the AAP up to 9 months, with deeper freezers offering even longer storage.
Having certain genetic or chromosomal conditions, older birthing parents, a sibling with autism, various environmental exposures, being of low birth weight, and having exposure to certain medications during pregnancy are risk factors for ASD.
In both full-term and preterm populations, evidence is compelling that breastfeeding or maternal milk feeding benefits child neurodevelopment. These benefits may result from nutritional differences in breast milk compared with infant formula and differences in maternal–infant interactions may also be at play.
Percent of mothers who breastfed were as follows: never (28.6%), 6 weeks (50.3%), 6 months (26.4%), 9 months (16.6%), 12 months (9.7%), 18 months (2.7%), 20 months (1%). We windsorized the 2% of mothers who reported breastfeeding longer than 24 months.
Coco Austin defended her choice to breastfeed her and husband Ice-T's daughter Chanel, now 9, until she was 6 years old, saying it was an opportunity to bond.
The length of a breastfeed varies a lot between babies and also throughout the day. It is normal for a breastfeed to last anywhere between 5 minutes and 40 minutes, or sometimes a little longer.
But Kennedy's greatest breach with the scientific consensus was likely his insistence that autism is an “epidemic” that must be caused by an environmental exposure that has been introduced within the past several decades. In fact, researchers say, autism is between 60 and 90 percent heritable.
Signs of autism in children
Seven case-control studies were found in which the association between ever breastfeeding and risk of autism spectrum disorder was investigated. We found a 58 % decrease in the risk of autism spectrum disorder with ever breastfeeding and a 76 % decrease in the risk with exclusive breastfeeding.
Chinning is a form of repetitive self-stimulatory behavior (stimming) that you may notice in children or adults with autism. It involves pressing, rubbing, or holding the chin against objects, surfaces, or even hands to gain sensory input or comfort.
Children with autism may exhibit rigidity, inflexibility and certain types of repetitive behavior such as: Insistence on following a specific routine. Having difficulty accepting changes in the schedule. A strong preoccupation with a particular interest.
Pregnancy spacing may affect odds of ASD. Mothers of children with autism spectrum disorders (ASD) may reduce their odds of having another child with ASD if they time a second pregnancy to occur 2.5 to 3 years after the birth of the child with ASD, according to a new study.