1 Frequently, too much LDL is the result of a diet rich in saturated fats (usually from animal foods such as beef, butter, lard, and whole-milk dairy products) and trans fats (found in processed and fast foods).
Although most bifocals and trifocals have visible lines at the border of lens segments, there is a blended round-seg bifocal that has a less noticeable near segment than its regular round-seg cousin. The near seg is blended into the distance portion of the lens so that it is virtually invisible.
The most accurate way to evaluate bone density, which is necessary when screening for or diagnosing osteopenia or osteoporosis (see Osteoporosis), is with dual-energy x-ray absorptiometry (DXA). DXA is also used to predict a person's risk of fracture and can be useful for monitoring the response to treatment as well.