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https://doi.org/10.1007/s11883-022-01003-z
NUTRITION (K. PETERSEN, SECTION EDITOR)
Plant‑ andAnimal‑Based Protein‑Rich Foods andCardiovascular
Health
YuWang1 · EricaR.Hill1 · WayneW.Campbell1 · LaurenE.O’Connor2
Accepted: 7 December 2021
This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply 2022
Abstract
Purpose of Review To summarize recent evidence from randomized controlled feeding trials (RCTs) on the effects of con-
suming plant- and animal-based protein-rich foods on cardiovascular health of adults.
Recent Findings Results from meta-analyses of RCTs exemplify the importance of considering relative effects of protein-
rich foods, i.e., when intake of one food increases, intake of another food likely decreases. Results from short-term RCTs
showed that overall diet quality is more influential for improving cardiovascular disease (CVD) risk factors than intake of
a single protein-rich food, e.g., red meat. Yet, assessing long-term CVD risk associated with intake of a single protein-rich
food as part of a dietary pattern is methodologically challenging. While accumulating evidence suggests gut microbiota as
a potential mediator for such effects, current knowledge is preliminary and restricts causal or functional inferences.
Summary A variety of protein-rich foods, both plant- and animal-based, should be consumed as part of nutrient-dense dietary
patterns to meet nutrient needs and improve cardiovascular health for adults.
Keywords Cardiovascular disease risk· Diet quality· Dietary patterns· Food processing· Dietary guidance· Animal and
plant protein
Introduction
Humans meet dietary protein needs mainly by consuming
protein-rich whole foods, both plant- and animal-based,
rather than consuming protein in isolated supplemental
forms. Research regarding impacts of amounts and sources
of protein-rich foods on cardiovascular disease (CVD) risk
factors, morbidity, and mortality is inconclusive within and
between observational and interventional studies [1, 2, 3,
4,5]. Plant- and animal-based protein-rich foods differ in
content and bioavailability of nutritive and non-nutritive
(e.g., bioactive) compounds. About 75% of Americans cur-
rently meet or exceed the recommended amounts of animal-
based protein-rich foods (e.g., meats, poultry, eggs) [6]. In
contrast, about 50% of Americans do not consume recom-
mended amounts of plant-based protein-rich foods (e.g.,
nuts, seeds, and soy products) [6]. Nearly one-half of total
protein-rich foods are consumed in mixed dishes which often
contain higher amounts of nutrients that are associated with
an increased CVD risk (e.g., sodium, saturated fat) [6]. Fur-
thermore, protein-rich foods are consumed as part of a vari-
ety of dietary patterns. Plant-based protein-rich foods (PPF)
are more commonly consumed as part of healthy dietary
patterns, whereas animal-based protein-rich foods (APF) are
more prominent in less healthy, Western-style dietary pat-
terns. Research that considers the interaction between source
of protein-rich foods and overall dietary pattern quality will
help improve our understanding of how protein-rich food
choice affects cardiovascular health.
This article is part of the Topical Collection on Nutrition
* Lauren E. O’Connor
leoconnor24@gmail.com
Yu Wang
wang3651@purdue.edu
Erica R. Hill
hill155@purdue.edu
Wayne W. Campbell
campbellw@purdue.edu
1 Department ofNutrition Science, Purdue University,
WestLafayette, IN47907, USA
2 Division ofCancer Prevention, National Cancer Institute,
National Institutes ofHealth, 4E570, 9609 Medical Center
Drive, Rockville, MD20850, USA
/ Published online: 25 March 2022
Current Atherosclerosis Reports (2022) 24:197–213
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