How food and drink affect your sleep. What you eat and drink before bed can affect your sleep. For example, foods containing the amino acid tryptophanâa building block of the sleep-related chemical serotoninâcould potentially make you drowsy, although evidence is mixed as to whether the amount in food is enough to change your sleep.
The study estimates lifetime societal savings (net present value) of about $12 billion from the more than 600,000 total knee replacement surgeries performed each year in the U.S. These societal savings primarily accrue to patients and employers.
Total hip replacement, also called total hip arthroplasty, is a hip replacement surgery that is performed over 100,000 times each year. The main reasons for a total hip replacement are to: Replace a worn-out hip joint. Improve the motion of your hip.