RNA. A type of nucleic acid consisting of nucleotide monomers with a ribose sugar and the nitrogenous bases adenine (A), cytosine (C), guanine (G), and uracil (U); usually single-stranded; functions in protein synthesis and as the genome of some viruses.
Underactive thyroid Photo Credit George Doyle/Stockbyte/Getty Images. It's hard to lose weight when your metabolism slows down, but there are things you can do. The thyroid, a butterfly-shaped gland in your throat, produces hormones that regulate many bodily functions, including metabolism.ollow a low-calorie diet. Anyone who wants to lose weight must burn more calories than are consumed. Unfortunately, for someone with an underactive thyroid, it can be difficult because the metabolism slows, meaning the body naturally burns fewer calories.
Slowed Metabolism, Slow Burn of Calories. When the thyroid gland is not sufficiently active, it can lead to weight troubles. Thyroid hormones, T4 and T3, regulate the bodyâs metabolismâthey provide every cell in the body with the energy needed to function.hey are critical for burning calories. If levels of thyroid hormones are low, you burn fewer calories per day. An underactive thyroid makes every calorie count more, sometimes double. It makes losing weight a slower process or makes it twice as difficult.