05/28/2026
BREASTFEEDING REDUCES TYPE 1 DIABETES
A fascinating study of 517 children found that children exclusively breastfed for more than 5 months had a dramatic 56% reduced. risk of getting T1D when older.
Even more surprising, when looking at Swedish children, if moms waited until after 7 months before introducing other foods, the child had an even more dramatic 75% reduced risk of diabetes. Folks, keep in mind that a 100% reduced risk means no one got diabetes.
I did a little more investigating and came across other studies showing that the pancreas and beta cells continue to develop in the child after birth, so this makes a lot of sense.
These findings suggest that breast milk contains growth factors (nutrients) essential for stimulating beta-cell and islet growth after birth. Of course, the more beta cells a child has, the less demand and less stress there is on each one for producing insulin, and therefore, fewer free radicals that can damage beta cells.
While longer breastfeeding appears to be one factor that reduces the risk of T1D (by increasing the total number), there are also dozens of environmental factors now identified that damage and reduce beta-cell numbers.
So, we have a big game of Tug of War going on - One side increasing beta cell number (such as by breastfeeding, polyphenols, etc.) - and on the other side, decreasing beta cell number, which occurs from the sum of toxic environmental factors This explains why even mothers who have extended breastfeeding can still have a child with T1D and vice versa.
But certainly, anything we can do to increase total beta cell mass. is a good thing. This is information that all expectant mothers and obstetricians need to be made aware. And for any fathers reading this, the research findings apply only to children.
View the study here...https://pubmed.ncbi.nlm.nih.gov/15037991/
Longer breastfeeding is an independent protective factor against development of type 1 diabetes mellitus in childhood
Abstract
Objective: The aim of this systematic review was to identify and analyze biomarkers that are influenced by physical exercise during pregnancy and that contribute to maternal-fetal health and development.
Data sources: A comprehensive systematic search of PubMed, Web of Science, and Elton B. Stephens Company Host databases was conducted without time restriction in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines (PROSPERO ID: CRD420251017740).
Study eligibility criteria: Eligible studies were randomized controlled trials examining the effects of exercise interventions during pregnancy on biomarkers measured in maternal serum, umbilical cord blood, breast milk, and placental tissue.
Study appraisal and synthesis methods: Eleven randomized controlled trials meeting the inclusion criteria were analyzed. The effects of different exercise modalities, durations, and intensities on a wide range of biomarkers were evaluated.
Results: Exercise interventions performed for 12 weeks or longer with 2 to 3 weekly sessions at moderate-to-vigorous intensity, demonstrated substantial effects on several biomarkers. These included a reduction in proinflammatory markers (TNF-α, interleukin 6), an increase in antiinflammatory cytokines (interleukin 10), improved lipid profiles (lower low-density lipoprotein, triglycerides), improved glucose regulation, and favorable changes in hormonal markers such as leptin and brain-derived neurotrophic factor. Additionally, exercise was associated with positive changes in umbilical cord blood cytokines, immunologic composition of breast milk, and placental mineral content.
Conclusion: Structured exercise programs during pregnancy, particularly resistance training and aerobic exercise performed in the same session, show promising effects on modulating inflammatory, metabolic, and immunologic biomarkers that may contribute to improved maternal-fetal health outcomes. However, current evidence is limited by methodological heterogeneity and lack of data from early pregnancy.
Sadauskaitė-Kuehne, V., Ludvigsson, J., Padaiga, Ž., Jašinskienė, E. and Samuelsson, U. (2004), Longer breastfeeding is an independent protective factor against development of type 1 diabetes mellitus in childhood. Diabetes Metab. Res. Rev., 20: 150-157. https://doi.org/10.1002/dmrr.425