Egg consumption shows cardiovascular disease risk associations at high intake but not at moderate intake around one egg per day.

This claim asserts a dose threshold: that egg intake is linked to cardiovascular disease only at high levels of consumption, not at the moderate intake of roughly one egg per day. The two halves stand on very different footing.

The moderate-intake half is well supported. Large pooled analyses of US cohorts and meta-analyses covering well over a million participants find that about one egg per day is not associated with incident cardiovascular disease after adjustment. The Health Council of the Netherlands' 2025 review, using a meta-analysis of 28 cohorts, found no clear association with coronary heart disease (relative risk 0.96, 95% interval 0.91 to 1.03, per additional egg per day).

The high-intake half, which gives the claim its threshold shape, is weakly supported and on balance unlikely. The pooled dose-response for coronary heart disease is flat rather than rising at the top of the range. The main positive evidence is a US dose-response analysis reporting modestly higher risk with each additional half-egg per day, a finding confounded by the less healthy profiles of heavy egg eaters and not reproduced by other large syntheses, including a Chinese cohort of about half a million people. For stroke, one dose-response meta-analysis found a non-linear curve reaching statistical significance only above about 500 g (roughly ten eggs) a week, but that rests on three observations from small studies, and the Dutch review judged there was too little research to conclude anything above 300 g a week. Trials show eggs raise LDL cholesterol by about 0.10 mmol/L per egg a day, roughly linearly, which predicts a small graded effect rather than a sharp threshold.

Rival accounts hold that the scattered positive associations reflect who eats the eggs and in what dietary context, rather than how many: positive findings cluster in US cohorts. Because data at two or more eggs a day are sparse, the threshold cannot be ruled out, but the evidence examined weighs against it. Large, well-adjusted cohorts with many participants eating two or more eggs a day, replicated across regions, would settle it.