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.
Sleep needs are individual, and change as you age. Newborns, for example, need a total of 14 to 17 hours of sleep a day. Infants need 12 to 15 hours a day, and teens need 8 to 10 hours. Ask yourself three questions to figure out whether the amount youâre currently getting is enough to keep you healthy and happy.