Obesity, hypertension and diabetes are known risk factors for heart failure, a chronic condition in which the heart cannot pump enough blood to meet the body's needs. For the first time, scientists have quantified the average number of heart failure-free years a person gains by not developing those risk factors by age 45, according to a study scheduled for presentation at the American College of Cardiology's 64th Annual Scientific Session in San Diego.

A trained scent dog has been found to accurately distinguish between benign and cancerous urine samples of thyroid cancer patients a terrific 88.2 percent of the time, according to a new study.

That canine diagnostic accuracy is only slightly less than that of fine-needle aspiration biopsy, the method generally used first to test thyroid nodules for cancer - but it is noninvasive and inexpensive. 

An experimental compound known as GC-1 causes loss of weight and fat in mice in lab tests. The drug speeds up metabolism, or burning off, of fat cells, by activating the receptors for thyroid hormone, which play a role in regulating metabolism - the body's conversion of food into energy. Thyroid hormone receptors also help with adaptive thermogenesis, in which the body converts excess energy (calories and fat) to heat.

Until recently, there was no evidence that human adults had  energy-burning, "good" brown fat. It was only known that animals and human infants did  but now it is known that human adults do have brown fat, but it appears to lose its calorie-burning activity over time.

Attempts to put a dollar value on the natural world – so-called “natural capital” or “ecosystem services” – have produced some frankly staggering numbers. A seminal 1997 paper valued the world’s ecosystem services at US$33 trillion (A$42 trillion) a year. This estimate was controversial, given that it dwarfed the entire global market economy, which at the time stood at roughly US$18 trillion a year.

New research published in Diabetologia shows that use of statins is associated with a 46% increase in the risk of developing diabetes, even after adjustment for confounding factors. The study is by Professor Markku Laakso, Institute of Clinical Medicine, University of Eastern Finland and Kuopio University Hospital, Finland, and colleagues.

The use of psychedelics, such as LSD and magic mushrooms, does not increase a person's risk of developing mental health problems, according to an analysis of information from more than 135,000 randomly chosen people, including 19,000 people who had used psychedelics, sponsored by an LSD advocacy group in Norway. The results are in Journal of Psychopharmacology.