| % Lactose Intolerance and Ethnicity | |
| Race, Ethnicity, Country of Origin | % Incidence |
| Southeast Asians | 98% |
| Asian Americans | 90% |
| Alaskan Eskimo | 80% |
| African-American Adults | 79% |
| Mexicans (rural communities) | 74% |
| North American Jews | 69% |
| Greek Cypriots | 66% |
| Cretans | 56% |
| Mexican American Males | 55% |
| Indian Adults | 50% |
| African American Children | 45% |
| Indian Children | 20% |
| Descendents of N. Europeans | 5% |
| * Data from | |