Intakes of total, saturated, monounsaturated, and polyunsaturated fats over the previous three months were assessed in husbands (or domestic partners) of women in the Dietary Modification component of the Women's Health Initiative (WHI) randomized to either the low-fat intervention or control arm for at least one year at the Birmingham, Alabama WHI Clinical Center. Dietary intake was estimated with a semi-quantitative food frequency questionnaire mailed to each husband. Intervention husbands consumed 35.0% of total energy from total fat compared to 37.4% in control husbands (P < 0.01), 11.9% of total energy from saturated fat compared to 12.6% in control husbands (p < 0.05), 13.7% of total energy from monounsaturated fat compared to 14.7% in control husbands (p < 0.005), and 6.7% of total energy from polyunsaturated fat compared to 7.2% in control husbands (p < 0.05). The WHI intervention to reduce dietary fat in postmenopausal women had the additional effect of reducing fat intake in their husbands. © 2002 Elsevier Science Inc. All rights reserved.