This gene encodes transthyretin, one of the three prealbumins including alpha-1-antitrypsin, transthyretin and orosomucoid. Transthyretin is a carrier protein; it transports thyroid hormones in the plasma and cerebrospinal fluid, and also transports retinol (vitamin A) in the plasma.
6 Surprising Signs You Need More Sleep. You know the classic signs: You're dragging at work, you're yawning all day, you're sluggish and you swear you can actually hear your bed calling your name. You need to sleep. On the days when a fourth cup of coffee is masking the most obvious signs, you might think you've won the battle. But don't kid yourself.
The amount of sleep you need depends on various factors â especially your age. While sleep needs vary significantly among individuals, consider these general guidelines for different age groups: In addition to age, other factors can affect how many hours of sleep you need. For example: Pregnancy. Changes in the body during early pregnancy can increase the need for sleep.