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We examined the associations of dietary cholesterol and egg intakes with cardiometabolic and all-cause mortality among Chinese and low-income Black and White Americans. Included were 47,789 Blacks, 20,360 Whites, and 134,280 Chinese aged 40-79 years at enrollment. Multivariable Cox models with restricted cubic splines were applied to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for mortality outcomes using intakes of 150 mg cholesterol/day and 1 egg/week as the references. Cholesterol intake showed a nonlinear association with increased all-cause mortality and a linear association with increased cardiometabolic mortality among Black Americans: HRs (95% CIs) associated with 300 and 600 mg/day vs. 150 mg/day were 1.07 (1.03-1.11) and 1.13 (1.05-1.21) for all-cause mortality ( P -linearity = 0.04, P -nonlinearity = 0.002, and P -overall &lt; 0.001) and 1.10 (1.03-1.16) and 1.21 (1.08-1.36) for cardiometabolic mortality ( P -linearity = 0.007, P -nonlinearity = 0.07, and P -overall = 0.005). Null associations with all-cause or cardiometabolic mortality were noted for White Americans ( P -linearity ≥ 0.13, P -nonlinearity ≥ 0.06, and P -overall ≥ 0.05 for both). Nonlinear inverse associations were observed among Chinese: HR (95% CI) for 300 vs. 150 mg/day was 0.94 (0.92-0.97) for all-cause mortality and 0.91 (0.87-0.95) for cardiometabolic mortality, but the inverse associations disappeared with cholesterol intake &gt; 500 mg/day ( P -linearity ≥ 0.12; P -nonlinearity ≤ 0.001; P -overall &lt; 0.001 for both). Similarly, we observed a positive association of egg intake with all-cause mortality in Black Americans, but a null association in White Americans and a nonlinear inverse association in Chinese. In conclusion, the associations of cholesterol and egg intakes with cardiometabolic and all-cause mortality may differ across ethnicities who have different dietary patterns and cardiometabolic risk profiles. However, residual confounding remains possible.

Cholesterol and Egg Intakes with Cardiometabolic and All-Cause Mortality among Chinese and Low-Income Black and White Americans