When carbohydrates are eaten, they are
converted to glucose that goes into the bloodstream and is
distributed throughout the body. Simultaneously, a combination of
chemicals that regulate how our body's cells absorb that sugar is
released from the liver, pancreas, and adrenal glands. These
chemical regulators include insulin, glucagon, epinephrin (adrenalin),
and norepinephrin. The mixture of these regulators released
following digestion of carbohydrates is never the same, since the
amount of carbohydrates that are eaten is never the same.
Interactions among the regulators are complicated. Any abnormalities
in the effectiveness of any one of the regulators can reduce or
increase the body's absorption of glucose. Gastrointestinal enzymes
such as amylase and lactase that break down carbohydrates may not be
functioning properly. These abnormalities may produce hyperglycemia
or hypoglycemia, and can be detected when the level of glucose in
the blood is measured.
Cell sensitivity to these regulators can be changed in many ways.
Over time, a person's stress level, exercise patterns, advancing age,
and dietary habits influence cellular sensitivity. For example, a
diet consistently overly rich in carbohydrates increases insulin
requirements over time. Eventually, cells can become less receptive
to the effects of the regulating chemicals, which can lead to
glucose intolerance.
Diet is both a major factor in producing hypoglycemia as well as the
primary method for controlling it. Diets typical of western cultures
contain excess carbohydrates, especially in the form of simple
carbohydrates such as sweeteners, which are more easily converted to
sugar. In poorer parts of the world, the typical diet contains even
higher levels of carbohydrates. Fewer dairy products and meat are
eaten, and grains, vegetables, and fruits are consumed. This dietary
trend is balanced, however, since people in these cultures eat
smaller meals and usually use carbohydrates more efficiently through
physical labor.
Early symptoms of severe hypoglycemia, particularly in the drug-induced
type of hypoglycemia, resemble an extreme shock reaction. Symptoms
include:
Cold and pale skin
Numbness around the mouth
Apprehension
Heart palpitations
Emotional outbursts
Hand tremors
Mental cloudiness
Dilated pupils
Sweating
Fainting.
Mild attacks, however, are more common in reactive hypoglycemia and
are characterized by extreme tiredness. Patients first lose their
alertness, then their muscle strength and coordination. Thinking
grows fuzzy, and finally the patient becomes so tired that he or she
becomes "zombie-like," awake but not functioning. Sometimes the
patient will actually fall asleep. Unplanned naps are typical of the
chronic hypoglycemic patient, particularly following meals.
Additional symptoms of reactive hypoglycemia include headaches,
double vision, staggering or inability to walk, a craving for salt
and/or sweets, abdominal distress, premenstrual tension, chronic
colitis, allergies, ringing in the ears, unusual patterns in the
frequency of urination, skin eruptions and inflammations, pain in
the neck and shoulder muscles, memory problems, and sudden and
excessive sweating.
Unfortunately, a number of these symptoms mimic those of other
conditions. For example, the depression, insomnia, irritability,
lack of concentration, crying spells, phobias, forgetfulness,
confusion, unsocial behavior, and suicidal tendencies commonly seen
in nervous system and psychiatric disorders may also be hypoglycemic
symptoms. It is very important that anyone with symptoms that may
suggest reactive hypoglycemia see a doctor.
Because all of its possible symptoms are not likely to be seen in
any one person at a specific time, diagnosing hypoglycemia can be
difficult. One or more of its many symptoms may be due to another
illness. Symptoms may persist in a variety of forms for long periods
of time. Symptoms can also change over time within the same person.
Some of the factors that can influence symptoms include physical or
mental activities, physical or mental state, the amount of time
passed since the last meal, the amount and quality of sleep, and
exercise patterns. |