D
DHEA (Dehydroepiandrosterone)
A steroid produced mostly in the adrenal glands from cholesterol
which is converted to the sex hormones, estrogen and
testosterone.
DHEA-S (Dehydroepiandrosterone sulphate)
A metabolite of DHEA.
DHT (Dihydrotestosterone)
A byproduct of the hormone testosterone, DHT is responsible for
the formation of male primary sex characteristics during the
embryonic stage as well as most secondary sex characteristics in
males at puberty and continues to be important to male sexual
function throughout adult life.
Dementia
Considerable loss of intellectual abilities; severe enough to
interfere with social or occupational functioning. Diagnostic
criteria include impairment of attention, orientation, memory,
judgment, language, motor and spatial skills and function.
Dermoid Cyst
A typically benign ovarian cyst, consisting primarily of fat but
may also contain bone, teeth, thyroid and hair ranging in size
from ˝ inch to 17 inches in diameter. Dermoid cysts can cause
twisting (torsion) of the ovary endangering blood supply. Often
diagnosed by MRI and removed by laparotomy.
Diabetes
Refers to Diabetes Mellitus and its two main but different
forms: Type I Diabetes (requiring insulin and also called
Insulin Dependent Diabetes Mellitus or IDDM) and Type 2
Diabetes (adult onset or Non Insulin Dependent Diabetes Mellitus
or NIDDM). A chronic medical condition, Diabetes Mellitus is a
group of metabolic diseases characterized by high blood sugar
levels (hyperglycemia), which result from defects in insulin
secretion or action, or both. Normally blood glucose levels are
tightly controlled by insulin, a hormone produced by the
pancreas, which lowers the blood glucose level. When the blood
glucose rises (for example, after eating food), insulin is
released from the pancreas to normalize levels. In patients with
Diabetes Mellitus, the absence of or insufficient production of
insulin causes hyperglycemia.
Dutasteride (Advodart, Duogen)
A drug used in the treatment of symptomatic benign prostatic
hyperplasia (BPH), which acts to inhibit the conversion of
testosterone to its more active form, DHT.
Dyslipidemia
Blood lipid abnormalities that are diagnosed when LDL (“bad”)
cholesterol is high, HDL (“good”) cholesterol is low,
triglycerides are high or a combination of these factors.
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