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Introduction

Nearly 7% of the world population is obese1 and about 66% of the adults in the United States are overweight or obese.2 Obesity is associated with a number of adverse medical conditions including increased risk of gallbladder disease, hypertension, type 2 diabetes mellitus, coronary heart disease (CHD), osteoarthritis, cancer death and reduced life expectancy.3–8 Obesity is also associated with adverse social and psychological consequences, including bias, discrimination and decreased quality of life.9,10

More effective treatment strategies are urgently needed for obesity management. The total caloric intake or energy density of one’s diet appears to be associated with obesity11–14 and a diet that induces a negative energy balance continues to be an important part of obesity management. Strategies to achieve the difficult task of eating less than desired include reduction of the energy density of foods by increasing food volume by the addition of fluids,15,16 bulk17–19 or their combination;20 or by increasing satiety by various anorectic drugs or macronutrient combinations of high satiety value.

Satiety is positively associated with the protein, fiber and water content of foods and negatively with fat and palatability ratings.21,22 However, within food groups, there may be as much as a twofold difference in satiety values, suggesting that certain foods promote greater satiety independent of macronutrient content or energy density. An egg is an example of such a food that has a 50% greater satiety index compared to white bread or ready-to-eat breakfast cereal.21 Compared to an isocaloric bagel breakfast of equal weight, an egg breakfast had a greater satiating effect, which translated into a lower caloric intake at lunch.23 The resulting decrease in energy consumption lasted for at least 24 h after the egg breakfast.

This study was undertaken to exploit the short-term satiating benefits of an egg breakfast23 for weight loss in a longer-term trial. The objectives were to determine if the incorporation of an egg breakfast in the diet by overweight or obese subjects would (1) induce reduced energy intake and unintentional weight loss, even when not attempting weight reduction; or (2) enhance weight loss when following a reduced energy diet. We compared the effects of an egg vs isocaloric bagel breakfast of equal weight on weight loss, indices of body size and composition, dietary compliance, food cravings and health-specific quality of life.Materials and methods

The study was approved by the institutional review boards at Pennington Biomedical Research Center and at Saint Louis University. Written informed consent was obtained from the participants. We certify that all applicable institutional and governmental regulations regarding the ethical use of human volunteers were followed during this research.

Participants

Of the 160 participants enrolled, 8 did not complete the trial. The final study sample included 152 participants (131 women and 21 men; mean age 45.0±9.4 years; black participants 47.7% and white participants 52.3%). Demographic characteristics of the participants are provided inTable 1

Psychologists have an understanding of and capacity to engage in evidence-based and culturally-informed intervention, assessment, prevention, training, and research practices. They focus on healthy aspects and strengths of their clients (whether they are individuals, couples, families, groups, organizations, or communities); environmental/contextual influences (such as cultural, sociopolitical, gender, racial, ethnic, sexual orientation, and socioeconomic factors) that shape people’s experiences and concerns; the role of career and work in peoples’ lives; and advocacy for equity and social justice.

Breast lumps or masses are a common concern among many women. While most breast lumps are non-cancerous and not harmful, it is important to seek medical attention if you notice any changes in your breasts.

Breast lumps can have a variety of causes, including hormonal changes, infections, cysts, fibroadenomas, and breast cancer. In some cases, breast lumps may be caused by breast tissue that is dense or fibrous, making it more difficult to detect changes.

Breast cancer is a serious concern and can be life-threatening if not detected and treated early. Women should perform monthly breast self-exams and seek medical attention if they notice any changes in their breasts such as lumps, swelling, or discharge.

In addition to breast self-exams, regular mammograms and clinical breast exams are important for early detection of breast cancer. Women should talk to their healthcare providers about when to start and how often to have these screenings based on their age and risk factors.

While most breast lumps are not harmful, it is important to seek medical attention if you notice any changes in your breasts. Your healthcare provider can perform a breast exam, order diagnostic tests, and provide guidance on the best course of action based on your individual situation.