People eating two eggs for breakfast at least five days a week in addition to a suggested diet of 1,000 calories per day lost 2.3 ponds more in two months—5.8 pounds versus 3.5 pounds—than those who were suggested the same diet and who ate the same amount of calories (340 calories) for breakfast as bagels.

Cholesterol levels were not affected.

People eating eggs without dieting did not lose any weight.

The risk of stroke increases as weight increases, at least in women, according to a study that followed 439,582 Korean women for 13 years.

Being overweight (BMI 25-26.4) increases the risk of stroke 1.9-fold, and being obese (BMI 30-31.9) increases the risk 3-fold in women under the age of 50.

In women over 50, the risk also increased, although to a lesser extent; being overweight increases the risk 1.3-fold, and being obese increases the risk 1.6-fold.

Lack of physical activity at 16- to 18-years-old increases risk of obesity 3.9-fold at the age of 25 and increases the risk of abdominal obesity 4.8-fold according to a study of ten identical twins who differed in weight by at least 35 pounds. The study was conducted by researchers from the Obesity Research Unit at Helsinki University Central Hospital in Helsinki, Finland.

The more fat a meal contains, the more calories people eat. This according to a study from researchers at University of Colorado School of Medicine in Denver, Colorado, USA.

When people consumed a diet containing 23.8 percent fat, they consumed an average of 2748 calories per day.

When they consumed a diet containing 32.7 percent fat, they consumed an additional 235 calories for an average of 2748 calories per day.

When they consumed a diet containing 38.1 percent fat, they consumed an additional 270 calories for an average of 3018 calories per day.

“These results show that energy intake increases as dietary fat content increases across the usual range of dietary fat consumed in the United States,” the researcher concluded.

“Even small reductions in dietary fat could help in lowering total energy intake and reducing weight gain in the population.”

Lean women underreported their calorie intake by 275 calories per day, while obese women underreported their calorie intake by 312 calories per day according to a new study.

Resting metabolism in obese women was similar to that of lean women (1601 calories per day versus 1505 calories per day), however, obese women sat 2.5 hours more each day (12.7 hours versus 10.1 hours), stood 2 hours less each day (2.7 hours versus 4.7 hours) and spent half as much time in activity than lean women (2.6 hours versus 5.4 hours) according to a new study.

This difference in activity accounted for an additional 300 calories burned in lean women.

The authors of the study concluded that “If the obese women adopted the activity patterns of the lean women, including a modification of posture allocation, an additional 300 [calories] could be expended every day.”

If the current rate of increase continues, by 2030, 86 percent of adults in the US will be overweight or obese and 51 percent will be obese according to a study from researchers at Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland, USA.

If the current rate of increase continues, by 2048, 100 percent of adults in the US will be overweight or obese according to a study from researchers at Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland, USA.

Depressed women underreport their weight by an average of 3.2 pounds, whereas non-depressed women underreport their weight by an average of 2.6 pounds according to a study from the University of Minnesota in Minneapolis, Minnesota, USA.

Both depressed and non-depressed women were accurate in reporting their height, underreporting their height by a fraction of an inch.

Ritalin (methylphenidate hydrochloride), a stimulant which blocks dopamine reuptake used for attention deficit disorder, increases resting metabolism by 7 percent more than placebo for three hours, and increases metabolism 5 percent following a meal according to a study by researchers at the University of Ottawa in Ontario, Canada.

Studies have found that injecting dopamine increases resting metabolism 6-15 percent depending on the amount injected.

The study involved 7 men and 7 women 19- to 37-years-old.

Children 8- to 10-years-old who engage in 15 minutes of vigorous physical activity per day or more are 5.2 times less likely to be classified as overweight compared to children of the same age performing less than 5 minutes per day of vigorous physical activity according to a study from researchers at the University of Manitoba in Winnipeg, Canada.

Children 8- to 10-years-old who engage in 45 minutes of moderate physical activity per day or more are 2 times less likely—half as likely—to be overweight as categorized by BMI, 4.2 times less likely to to have 20 percent body fat, and 3 times less likely to have 25 percent body fat than children of the same age performing no more than 15 minutes per day of vigorous physical activity according to a study from researchers at the University of Manitoba in Winnipeg, Canada.

Postpartum depression increases the risk of retaining at least 11 pounds of the weight gained during pregnancy one year after giving birth 2.5-fold according to a study from researchers at the Harvard Medical School in Boston, Massachusetts, USA.

Another study reported that women who reported “depressive symptoms lost less than half as much weight as women without depression”.

Postpartum depression is estimated to affect between 10 and 15 percent of women.

“For many women, returning to prepregnancy weight is a challenge. Approximately 14–25% of women are at least [11 pounds] heavier one year after delivery,” notes a study from researchers at the Harvard Medical School in Boston, Massachusetts, USA.

Identified risk factors include higher pre-pregnancy weight, more weight gained during pregnancy, being black, giving birth to their first child, and behaviors including lack of sleep, low physical activity, high trans fat intake, and frequent television viewing the study notes.

Both black and white women with “vital exhaustion”, defined as excess fatigue, irritability and feelings of demoralization, weigh about 10 pounds more after six years than those with no vital exhaustion, while the difference in men is 7-8 pounds according to research from the University of Leeds in Leeds, England.

Women who lost and maintained at least a 10 percent weight loss after two years exercised an average of 48 minutes per day and reduced their calorie intake to an average of 1365 calories per day according to a new study from researchers at University of Pittsburgh in Pittsburgh, Pennsylvania, USA.

Women who gained weight exercised an average of 18 minutes per day and ate an average of 1809 calories per day.

Women who lost up to 4.9 percent of their body weight exercised an average of 28 minutes per day and reduced their calorie intake to 1638 calories per day.

Women who lost 5 to 9.9 percent of their body weight exercised an average of 26 minutes per day and reduced their calorie intake to 1452 calories per day.

As of 2007, 26.4 percent of US men and 24.8 percent of US women are obese for a total of 25.6 percent of US adults. This according to data from the 2007 Behavioral Risk Factor Surveillance System (BRFSS) survey analyzed by the US Centers for Disease Control.

Among US adults who are 18- to 29-years-old, 19.1 percent of men and women are obese according to data from the 2007 Behavioral Risk Factor Surveillance System (BRFSS) survey analyzed by the US Centers for Disease Control.

Among US adults who are 30- to 39-years-old, 28.2 percent of men and 24.8 percent of women are obese for a average of 26.5 percent in this age group according to data from the 2007 Behavioral Risk Factor Surveillance System (BRFSS) survey analyzed by the US Centers for Disease Control.

Among US adults who are 40- to 49-years-old, 29.4 percent of men and 26.1 percent of women are obese for a average of 27.8 percent in this age group according to data from the 2007 Behavioral Risk Factor Surveillance System (BRFSS) survey analyzed by the US Centers for Disease Control.

Among US adults who are 50- to 59-years-old, 31.7 percent of men and 30.2 percent of women are obese for a average of 30.9 percent in this age group according to data from the 2007 Behavioral Risk Factor Surveillance System (BRFSS) survey analyzed by the US Centers for Disease Control.

Among US adults who are 60- to 69-years-old, 30.1 percent of men and 29.8 percent of women are obese for a average of 29.9 percent in this age group according to data from the 2007 Behavioral Risk Factor Surveillance System (BRFSS) survey analyzed by the US Centers for Disease Control.

Among US adults who are 70-years-old or older, 18.5 percent of men and 20.0 percent of women are obese for a average of 19.4 percent in this age group according to data from the 2007 Behavioral Risk Factor Surveillance System (BRFSS) survey analyzed by the US Centers for Disease Control.

Among white adults in the US, 26.3 percent of men and 22.9 percent of women are obese for a average of 24.5 percent in this group according to data from the 2007 Behavioral Risk Factor Surveillance System (BRFSS) survey analyzed by the US Centers for Disease Control.

Among black adults in the US, 32.1 percent of men and 39.0 percent of women are obese for a average of 35.8 percent in this group according to data from the 2007 Behavioral Risk Factor Surveillance System (BRFSS) survey analyzed by the US Centers for Disease Control.