In 2022, DOR celebrates 60 years of innovative health research.

The Kaiser Permanente Division of Research conducts, publishes, and disseminates epidemiologic and health services research to improve the health and medical care of Kaiser Permanente members and society at large. We seek to understand the determinants of illness and well-being and to improve the quality and cost-effectiveness of health care. DOR’s 600-plus staff is currently working on more than 580 epidemiological and health services research projects. Read our story on how it all began and in our interactive anniversary timeline.

Man reading

Larger Abdomen in MidLife Increases Risk of Dementia, According to a New Kaiser Permanente Division of Research Study

Larger Abdomen and Risk of Dementia Oakland CA – People in their 40s with larger stomachs have a higher risk for dementia when they reach their 70s, according to a study published in the March 26, 2008, online issue of…

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Woman pouring coffee

Kaiser Permanente Study Shows Newer, Stronger Evidence that Caffeine During Pregnancy Increases Miscarriage Risk

Coffee, Miscarriage Linked Coffee, tea, soda and hot chocolate present risk January 21, 2008 (Oakland, Calif.) – High doses of daily caffeine during pregnancy – whether from coffee, tea, caffeinated soda or hot chocolate -- cause an increased risk of…

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Kaiser Permanente Harvard Medical School Study Links Lack of Sleep to Weight Gain for New Moms

First Study Ever Finds Moms who Sleep Only Five Hours Have Tripled Risk of Excessive Weight at One Year After Baby’s Birth November 19, 2007 (Oakland, CA) – Mothers who reported sleeping five hours or less per day when their…

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Largest Study Ever to Investigate Risk Factors of Autism and Other Developmental Disabilities Will Begin Enrolling Families in Bay Area and Across U.S.

Study to Explore Early Development (SEED) Families from Alameda and Santa Clara Counties Invited to Participate OAKLAND, Calif., November 14, 2007 — Researchers from Kaiser Permanente and the California Department of Public Health, as well as from five other sites…

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Under Used Colon Cancer Screening Test is Effective

And may help improve colon cancer screening rates Oakland CA – An under used colon cancer screening test now available in the U.S. effectively detects colorectal cancer and may help to improve colon cancer screening rates, according to investigators at…

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bowl of fruit

Increasing Vegetable and Fruits Beyond Current Dietary Guidelines Does Not Reduce Breast Cancer Recurrence or Death, According to a New Study

Diet and Breast Cancer Eating a diet very high in vegetables, fruit and fiber and low in fat, did not reduce breast cancer recurrence or death in early stage breast cancer survivors, according to a study published in the July…

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Woman consulting with a KP Pharmacist

Calcium, Vitamin D Supplements May Help Prevent Weight Gain in Postmenopausal Women

Supplements may prevent weight gain in women Largest national study of its kind finds popular nutritional supplements have minimal, but statistically significant effects on weight change over seven years Oakland, CA, May 14, 2007 — Postmenopausal women who take calcium…

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Risk of Autism Rises With Age of Moms, Dads

Kaiser Permanente study of more than 132,000 children suggests link between chronic, life-long condition and advanced maternal and paternal age Oakland, CA, April 2, 2007 — Men and women who wait to have babies later in life may increase their…

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Middle Age Brings Substantial Fitness Declines, Weight Gains

Middle Age and Fitness Levels Largest, long-term study of physical fitness change in U.S. investigates fitness trends in Caucasian and African American men and women Oakland, Calif., Feb. 28, 2007 – Physical fitness and activity levels decline substantially as we…

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Kaiser Permanente Unveils Groundbreaking Genetic Research Program

Researchers aim to reveal the genetic and environmental causes behind deadly and disabling diseases Oakland, Calif. (Feb. 14, 2007)—The Kaiser Permanente Northern California Division of Research is launching one of the largest research projects in the United States to examine…

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