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.
But adults do not need so much sleep. Some thrive on five hours a night, while others need seven. The only part of your body that would be affected by a true lack of sleep - and that means several days without any sleep - is your brain.