Photo Credit George Doyle/Stockbyte/Getty Images. If a person experiences a drop in blood pressure, fever, diarrhea, loss of hydration from vomiting or dizziness, lightheadedness can occur. Further, if the brain does not receive enough blood, it can cause lightheadedness as well.eart Attack. Heart attack is one of the more serious conditions that cause lightheadedness. During a heart attack, oxygen is prevented from getting to the heart and the rest of the body when blood vessels are blocked, causing the head to feel light and weightless.
Screening for Osteoporosis. 1  An easy and painless procedure, an osteoporosis screening requires you to place your foot in an ultrasound device called a bone densitometer. 2  This device then measures the bone mineral density of your heel.steoporosis Screening/Bone Density Test. Osteoporosis is a disease in which bone becomes extremely fragile. Bone is a complex living tissue that can be weakened by poor diet and lack of exercise.
After a physical, laboratory tests, and bone mineral density might be performed. First is bone densitometry, which reports the density of your bone mass. This test is not part of routine screening, but will be done if osteoporosis is suspected or if you are at high risk for the disease.n this type of osteoporosis, vertebral spine fractures are the most common result. Type II refers to a simultaneous loss of both the outer bone and the spongy tissue inside the bone. This type is only two times more common in women than men.