News | What Should People With Endometriosis Eat? Evidence Points to Vegetables and Dairy
In a study published in Foods, Italian researchers conducted an umbrella review of associations between diet and endometriosis risk. Adequate vegetable and dairy intake may significantly lower risk, while butter and high caffeine intake may increase it.
The researchers combined 10 systematic reviews covering more than 120,000 women across Asia, North America, Europe, and Oceania. Their goal was to clarify the evidence and provide clinicians and patients with better dietary guidance.
Could full-fat dairy be protective? Vegetables show the strongest association
Although dairy is often debated because of saturated fat, full-fat milk, cheese, and other high-fat dairy products were associated with lower endometriosis risk. Calcium, vitamin D, butyrate, and other active components may contribute.
The data showed:
Women with the highest vegetable intake had 41% lower risk than those with the lowest intake (pooled RR = 0.59, 95% confidence interval: 0.49–0.71), the strongest protective signal;
Overall dairy intake was associated with about a 13% reduction in risk (RR = 0.87, CI: 0.81–0.95);
Cheese intake alone was associated with about a 16% reduction;
Three or more daily servings of dairy, including milk, yogurt, and cheese, were associated with a meaningful reduction in risk.
Butter and coffee may be dietary risk factors
Some foods were associated with higher risk:
Butter intake was associated with a 27% increase (RR = 1.27, CI: 1.03–1.55);
High caffeine intake (>300 mg/day, about three large American coffees) was associated with a 30% increase (RR = 1.30, CI: 1.05–1.62);
Overall caffeine intake showed a trend toward a 13% increase (RR = 1.13).
Possible mechanisms and strength of evidence
The researchers identified oxidative stress, chronic inflammation, and estrogen signaling as possible mechanisms linking diet to endometriosis risk.
However, all associations were rated level IV evidence, or weak, because:
All included studies were observational;
Food-intake definitions were inconsistent;
Control of confounders such as smoking and BMI was limited;
Small-study and publication bias were possible.
Not a replacement for standard treatment, but a low-risk management option
Experts note that the findings cannot directly support clinical guidelines. However, where treatment options are limited and diagnosis is commonly delayed by more than seven years, dietary changes may be considered as a low-risk option.
The authors said clinicians should make clear:
"These dietary changes are not treatment, but they may offer benefits as part of self-management, especially while patients wait for specialist care."
Some studies also suggest that probiotics, antioxidants, and anti-inflammatory supplements may ease pain, but the evidence is too inconsistent for broad recommendations.
Next steps: Higher-quality clinical studies are needed
The team called for:
Larger prospective randomized controlled trials;
Standardized definitions of dietary exposure;
More diverse racial and geographic populations;
Research on the potential gut microbiome–inflammation–estrogen mechanism.
They also noted that yogurt and its effects on the gut microbiome warrant further study and may offer a new perspective on symptom management.
News | What Should People With Endometriosis Eat? Evidence Points to Vegetables and Dairy
News | What Should People With Endometriosis Eat? Evidence Points to Vegetables and Dairy
In a study published in Foods, Italian researchers conducted an umbrella review of associations between diet and endometriosis risk. Adequate vegetable and dairy intake may significantly lower risk, while butter and high caffeine intake may increase it.
The researchers combined 10 systematic reviews covering more than 120,000 women across Asia, North America, Europe, and Oceania. Their goal was to clarify the evidence and provide clinicians and patients with better dietary guidance.
Could full-fat dairy be protective? Vegetables show the strongest association
Although dairy is often debated because of saturated fat, full-fat milk, cheese, and other high-fat dairy products were associated with lower endometriosis risk. Calcium, vitamin D, butyrate, and other active components may contribute.
The data showed:
Women with the highest vegetable intake had 41% lower risk than those with the lowest intake (pooled RR = 0.59, 95% confidence interval: 0.49–0.71), the strongest protective signal;
Overall dairy intake was associated with about a 13% reduction in risk (RR = 0.87, CI: 0.81–0.95);
Cheese intake alone was associated with about a 16% reduction;
Three or more daily servings of dairy, including milk, yogurt, and cheese, were associated with a meaningful reduction in risk.
Butter and coffee may be dietary risk factors
Some foods were associated with higher risk:
Butter intake was associated with a 27% increase (RR = 1.27, CI: 1.03–1.55);
High caffeine intake (>300 mg/day, about three large American coffees) was associated with a 30% increase (RR = 1.30, CI: 1.05–1.62);
Overall caffeine intake showed a trend toward a 13% increase (RR = 1.13).
Possible mechanisms and strength of evidence
The researchers identified oxidative stress, chronic inflammation, and estrogen signaling as possible mechanisms linking diet to endometriosis risk.
However, all associations were rated level IV evidence, or weak, because:
All included studies were observational;
Food-intake definitions were inconsistent;
Control of confounders such as smoking and BMI was limited;
Small-study and publication bias were possible.
Not a replacement for standard treatment, but a low-risk management option
Experts note that the findings cannot directly support clinical guidelines. However, where treatment options are limited and diagnosis is commonly delayed by more than seven years, dietary changes may be considered as a low-risk option.
The authors said clinicians should make clear:
"These dietary changes are not treatment, but they may offer benefits as part of self-management, especially while patients wait for specialist care."
Some studies also suggest that probiotics, antioxidants, and anti-inflammatory supplements may ease pain, but the evidence is too inconsistent for broad recommendations.
Next steps: Higher-quality clinical studies are needed
The team called for:
Larger prospective randomized controlled trials;
Standardized definitions of dietary exposure;
More diverse racial and geographic populations;
Research on the potential gut microbiome–inflammation–estrogen mechanism.
They also noted that yogurt and its effects on the gut microbiome warrant further study and may offer a new perspective on symptom management.
Source:
Collected online