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Area of Science:

  • Nutrition Science
  • Cardiovascular Health
  • Dietary Interventions

Background:

  • Cardiovascular disease (CVD) necessitates practical risk reduction strategies.
  • Dietary interventions, such as bean consumption, show potential for lowering LDL cholesterol.
  • Further research on optimal bean intake and variety is needed.

Purpose of the Study:

  • To evaluate the impact of daily canned bean consumption (1 cup and ½ cup) on serum lipid and glycemic biomarkers.
  • To compare the effects of various canned bean types (black, navy, pinto, dark red kidney, white) against a white rice control.
  • To assess outcomes in adults with elevated LDL cholesterol.

Main Methods:

  • A multicenter, randomized, crossover study involving 73 adults with elevated LDL cholesterol.
  • Participants consumed 1 cup (180g) or ½ cup (90g) of canned beans, or 1 cup of white rice daily for 4-week periods with washouts.
  • Fasting serum LDL cholesterol was the primary outcome, with other lipids and glycemic biomarkers as secondary outcomes.

Main Results:

  • One cup of canned beans daily significantly reduced total cholesterol (-5.46%) and LDL cholesterol (-8.08%) compared to white rice.
  • ½ cup of beans did not show a significant reduction in total or LDL cholesterol compared to the control.
  • No significant differences were observed in other lipid or glycemic biomarkers among the treatment groups.

Conclusions:

  • Consuming 1 cup (180g) of diverse canned beans daily is a practical strategy for reducing total and LDL cholesterol.
  • This dietary approach can aid in cardiovascular disease risk management for adults with elevated LDL cholesterol.
  • The study was registered at clinicaltrials.gov (NCT03830970).