04/22/2026
Protein...protein...protein...
Its the new Marsha.
If you've been following ANYONE on Social Media, I'm sure you've heard how amazingly important protein is...yes it is.
Like everything in physiology, we need balance.
Most studies that look at protein in pregnancy are looking at low protein diets versus the recommended protein intake, not excessively high protein intake. So let's take a look at those macros.
A low protein diet in pregnancy is considered a diet that consists of 15% or less of the calories coming from proteins.
A high protein diet in pregnancy is considered a diet consisting of 30% or more of the calories coming from proteins. 30% is what is currently recommended for pregnancy. And this equates to about 70 - 100grams of protein per day.
What we also see is that the protein type tends to matter, more so when it is imbalanced. Meaning we have high heme iron-based proteins AKA red meat, but a decrease in antioxidant intake, AKA fruits and vegetables, nuts and seeds, and whole grains.
👉🏼Comparing highest vs lowest intake, total protein and animal protein during pregnancy were linked to significantly higher GDM risk, with a dose response. Each +5% of energy from total protein during pregnancy = 20-24% higher GDM odds, this was stronger for animal protein intake.
👉🏼A 2025 Japanese study found that high preconception protein intake (top quintile of % energy) was associated with a higher risk of early GDM diagnosis
Protein Source matters. Something I see a lot is patients trying to reach these extremely high protein goals and consuming lots of processed proteins.
👉🏼A 2025 Greek cohort found that high pre-pregnancy intake of processed proteins predicted GDM in normal BMI women.
No study finds that protein intake greater than 100 grams per day is more protective or add additional benefit in pregnancy, and more studies show that going above and beyond this may actually cause more harm than good depending on the source.
Studies:
https://pubmed.ncbi.nlm.nih.gov/38320463/
https://europepmc.org/article/med/39913952
https://pmc.ncbi.nlm.nih.gov/articles/PMC12566673/