Abstract
Background
Diets enriched with dietary cholesterol, frequently from eggs, have been shown to produce a small but variable increase in plasma low density lipoprotein (LDL) cholesterol. There is evidence to suggest that energy-restricted diets, that may contain a relatively high proportion of fat and cholesterol, can attenuate the cholesterol-raising effect of dietary cholesterol on plasma LDL.
Aim of the study
To determine the combined effects of increased dietary cholesterol and weight loss produced by energy restriction on plasma LDL cholesterol and lipoproteins.
Methods
A randomized, controlled, parallel study was performed in two groups of free-living volunteers on an energy-restricted diet for 12 weeks, one group was instructed to consume two eggs a day (n = 24), the other, to exclude eggs (n = 21). Dietary advice on energy restriction was based on the British Heart Foundation guidelines on how to lose weight for men and women.
Results
Energy intake fell by 25 and 29% in the egg-fed and non-egg-fed groups, resulting in a moderate weight loss of 3.4 kg (P < 0.05) and 4.4 kg (P < 0.05), respectively. The daily intake of dietary cholesterol increased significantly in the egg-fed group from 278 to 582 mg after 6 weeks. The concentration of plasma LDL cholesterol decreased in the non-egg-fed groups after 6 weeks (P < 0.01) and in the egg-fed and non-egg-fed at 12 weeks relative to baseline. There were no other significant changes in plasma lipoproteins or LDL particle size.
Conclusions
An increased intake of dietary cholesterol from two eggs a day, does not increase total plasma or LDL cholesterol when accompanied by moderate weight loss. These findings suggest that cholesterol-rich foods should not be excluded from dietary advice to lose weight on account of an unfavorable influence on plasma LDL cholesterol.
Similar content being viewed by others
References
Brown MS, Goldstein JL (1986) A receptor-mediated pathway for cholesterol homeostasis. Science 232:34–47
Davies IG, Graham JM, Griffin BA (2003) Rapid separation of LDL subclasses by iodixanol gradient ultracentrifugation. Clin Chem 49:1865–1872
Dietschy JM (1998) Dietary fatty acids and the regulation of plasma low density lipoprotein cholesterol concentrations. J Nutr 128:444S–448S
Edington J, Geekie M, Carter R, Benfield L, Ball M, Mann J (1989) Serum lipid response to dietary cholesterol in subjects fed a low-fat, high fibre diet. Am J Clin Nutr 50:58–62
Edington J, Geekie M, Carter R, Benfield L, Fisher K, Ball M, Mann J (1987) Effects of dietary cholesterol on plasma cholesterol concentration in subjects following a reduced fat diet, high fibre diet. Br Med J 294:333–336
Foster GD, Wyatt HR, Hill JO, McGuckin BG, Brill C, Mohammed BS, Szapary PO, Rader DJ, Edman JS, Klein S. (2003) A randomised trial of a low-carbohydrate diet for obesity. N Engl J Med 348:2082–2090
Ginsberg HN, Karmally W, Siddiqui M, Holleran S, Tall AR, Blaner WS, Ramakrishnan R (1995) Increases in dietary cholesterol are associated with modest increases in both LDL and HDL cholesterol in healthy young women. Arterioscler Thromb Vasc Biol 15:169–178
Ginsberg HN, Karmally W, Siddiqui M, Holleran S, Tall AR, Rumsey SC, Deckelbaum RJ, Blaner WS, Ramakrishnan R (1994) A dose-response study of the effects of dietary cholesterol on fasting and postprandial lipid and lipoprotein metabolism in healthy young men. Arterioscler Thromb Vasc Biol 14:576–586
Herron KL, Fernandez ML (2004) Are the dietary guidelines regarding egg consumption appropriate? J Nutr 134:187–190
Holt SHA, Brand-Miller JC, Petocz P et al (1995) A satiety index of common foods. Eur J Clin Nutr 49:675–690
Hu FB, Stampfer MJ, Rimm EB, Manson JE, Ascherio A, Colditz GA, Rosner BA, Spiegelman D, Speizer FE et al (1999) A prospective study of egg consumption and risk of cardiovascular disease in men and women. J Am Med Assoc 281:1387–1394
Katan MB, Beynen AC, de Vries JH, Nobels A (1986) Existence of consistent hypo- and hyper-responders to dietary cholesterol in man. Am J Epidemiol 123:221–234
Knopp RH, Retzlaff BM, Walden CE, Dowdy AA, Tsunehara CH, Austin MA, Nguyen T (1997) A double-blind, randomized, controlled trial of two eggs per day in moderately hypercholesterolemic and combined hyperlipidemic subjects taught the NCEP step I diet. J Am Coll Nutr 16:551–561
Krauss RM, Eckel RH, Howard B, Appel LJ, Daniels SR, Deckelbaum RJ, Erdman JW Jr, Kris-Etherton P, Goldberg PJ et al (2000) AHA dietray guidelines. Revision 2000: a statement for healthcare professionals. From the nutrition committee of the American Heart Association. Circulation 102:2284–2299
Lee A, Griffin BA (2006) Dietary cholesterol, eggs and coronary heart disease in perspective. Brit Nutr Found Bull 31:21–27
McNamara DJ (2000) Dietary cholesterol and atherosclerosis. Biochim Biophys Acta 1529:310–320
Millar JA, Burke V (2002) Relationship between sample size and the definition of equivalence in non-inferiority drug studies. J Clin Pharm 27:329–333
Ostlund Jr RE, Bosner MS, Stenson WF (1999) Cholesterol absorption efficiency declines at moderate dietary doses in normal human subjects. J Lipid Res 40:1453–1458
Patalay M, Lofgren IE, Freake HC, Koo SI, Fernandez ML (2005) The lowering of plasma lipids following a weight reduction program is related to increased expression of the LDL receptor and lipoprotein lipase. J Nutr 135:735–739
Royal College of Physicians (2004) Storing up problems: the medical case for a slimmer nation. RCP, London
Samaha FF, Iqbal N, Seshadri P, Chicano KL, Daily DA, McGory J, Williams T, Williams M, Gracely EJ, Stern L (2003) A low-carbohydrate as compared with a low-fat diet in severe obesity. N Engl J Med 348:2074–2081
The British Heart Foundation (2003) So you want to lose weight for good. A guide to losing weight for men and women. British Heart Foundation publication. M2/72003
Vander Wal JS, Marth JM, Khosla P, Jen KL, Dhurandar NV (2005) Short-term effect of eggs on satiety in overweight and obese subjects. J Am Coll Nutr 24:510–515
Volek JS, Sharman MJ, Forsythe CE (2005) Modification of lipoproteins by very low carbohydrate diets. J Nutr 135:1339–1342
Weggemans RM, Zock PL, Katan MB (2001) Dietary cholesterol from eggs increases the ratio of total cholesterol to high-density lipoprotein cholesterol in humans: a meta-analysis. Am J Clin Nutr 73:885–891
Author information
Authors and Affiliations
Corresponding author
Additional information
This study was partly supported by the British Egg Industry Council, UK.
An erratum to this article is available at http://dx.doi.org/10.1007/s00394-008-0746-3.
Rights and permissions
About this article
Cite this article
Harman, N.L., Leeds, A.R. & Griffin, B.A. Increased dietary cholesterol does not increase plasma low density lipoprotein when accompanied by an energy-restricted diet and weight loss. Eur J Nutr 47, 287–293 (2008). https://doi.org/10.1007/s00394-008-0730-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00394-008-0730-y