Open Access

Peer-reviewed

Evidence for a Peak Shift in a Humoral Response to Helminths: Age Profiles of IgE in the Shuar of Ecuador, the Tsimane of Bolivia, and the U.S. NHANES

• Aaron D. Blackwell ,

  * E-mail: ablackwell@isber.ucsb.edu

  Affiliations Integrative Anthropological Sciences, University of California, Santa Barbara, Santa Barbara, California, United States of America, Department of Anthropology, University of Oregon, Eugene, Oregon, United States of America, Institute of Cognitive and Decision Sciences, University of Oregon, Eugene, Oregon, United States of America

  ⨯
• Michael D. Gurven,

  Affiliation Integrative Anthropological Sciences, University of California, Santa Barbara, Santa Barbara, California, United States of America

  ⨯
• Lawrence S. Sugiyama,

  Affiliations Department of Anthropology, University of Oregon, Eugene, Oregon, United States of America, Institute of Cognitive and Decision Sciences, University of Oregon, Eugene, Oregon, United States of America

  ⨯
• Felicia C. Madimenos,

  Affiliations Department of Anthropology, University of Oregon, Eugene, Oregon, United States of America, Institute of Cognitive and Decision Sciences, University of Oregon, Eugene, Oregon, United States of America

  ⨯
• Melissa A. Liebert,

  Affiliations Department of Anthropology, University of Oregon, Eugene, Oregon, United States of America, Institute of Cognitive and Decision Sciences, University of Oregon, Eugene, Oregon, United States of America

  ⨯
• Melanie A. Martin,

  Affiliation Integrative Anthropological Sciences, University of California, Santa Barbara, Santa Barbara, California, United States of America

  ⨯
• Hillard S. Kaplan,

  Affiliation Department of Anthropology, University of New Mexico, Albuquerque, New Mexico, United States of America

  ⨯
• J. Josh Snodgrass

  Affiliations Department of Anthropology, University of Oregon, Eugene, Oregon, United States of America, Institute of Cognitive and Decision Sciences, University of Oregon, Eugene, Oregon, United States of America

  ⨯