Weight Loss Increases Vitamin D Status

Background Vitamin D is considered to be a hormone as well as a vitamin. It regulates calcium absorption and is important for bone health. Levels of vitamin D vary based on weight, ethnicity, age, and geography. Lab and epidemiological studies have claimed that vitamin D could be protective against certain cancers and cardiovascular disease. It […]

Influence of Vitamin D Supplementation on Plasma Lipid Profiles: A Meta-Analysis of Randomized Controlled Trials

Background Cardiovascular disease (CVD) refers to a wide range of conditions affecting the heart and blood vessels such as veins and arteries. It is the leading cause of death and is also responsible for a high disability rate worldwide. Efforts have been made to research and identify risk factors for atherosclerosis, the hardening and potential […]

Types of Dietary Fat Can Affect the Uptake of Vitamin D Supplementation in the Body

Background Calcium and vitamin D3 are necessary for bone health. Vitamin D3 is a fat-soluble vitamin that is poorly soluble in aqueous environments like intestinal lumen. Therefore for it to be absorbed it needs to be solubilized by dietary fat and bile salt. Purpose Some studies have shown that some types of dietary fat like […]

Reduced Sleep Leads to Increased Activation of Brain Areas Sensitive to Food

Background The obesity epidemic in the United States is due to an imbalance between energy intake and expenditure. Energy balance is controlled by a hormone system. This hormone system transfers information from the body to the brain. A reduction in sleep can affect the hormone system’s control on energy balance. Previous research has found higher […]

What is the Content of the Weight Gained Back After Significant Weight Loss?

Background It is well known that obesity is associated with a great number of health problems, and weight loss could improve such complications. It is also known, however, that some effects of weight loss including loss of muscle mass and bone density can have negative side effects, especially for the older population. Only about 20% […]

Changes in Hormones After Weight Loss May Explain Weight Regain

Background Many any people who suffer from overweight and obesity go on diets that restrict their calories, which initially leads to weight loss, however the majority of these dieters regain the weight. The body is able to detect a low amount of calories consumed, and will therefore increase levels of ghrelin, a hormone that stimulates […]

Effect of Normal Versus High Protein Diet on Bone Mineral Density During Weight Loss

Background Weight loss through caloric restriction can lead to a decrease in bone mineral density and greater fracture risk. Risk factors are prevalent in the older population due to decreased calcium absorption. High protein diets have shown to have a positive effect on bone mineral density and can reduce the risk of bone fractures in […]

Greater Weight Loss and Insulin Sensitivity with Carbohydrates Eaten Mostly at Dinner

Background Body fat has the ability to secrete certain hormones throughout the day which can regulate hunger, satiety, and the development of metabolic syndrome. Among the hormones secreted by body fat, leptin and adiponectin are involved in satiety and improving insulin sensitivity, respectively. Both can possibly be modified through altered carbohydrate consumption in order to […]

Effects of 4 Weight-loss Diets Differing in Fat, Protein, and Carbohydrate on Fat Mass, Lean Mass, Visceral Adipose Tissue, and Hepatic Fat: Results from the Pounds Lost Trial

Background The problem is that there are currently many fad diets and diet supplements that claim to change total body weight and waist circumference. However, the aim of any weight loss attempt is the reduction of fat mass rather than lean mass. The standard measurement for overall body weight change gives total mass lost with […]

Weight Loss in Obese Older Adults by the Combination if Exercise and Diet

Background Obesity has been steadily increasing over the past few decades, and has become a clear issue in our society today. Obesity is defined as a body mass index (BMI) above 30 kg/m2. In adults 65 years and older, 20% of the population is currently obese. This can lead to many complications in combination with […]