Brown Fat (image) Sanford-Burnham Medical Research Institute Caption Calorie-burning brown fat (shown here) gets a boost from natriuretic peptides produced by the heart. Credit Collins lab, Sanford-Burnham Medical Research Institute Usage Restrictions Free to use in conjunction with this press release only, using provided caption and credit. Email questions to firstname.lastname@example.org. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.