Skimpy meals, crash dieting and skipping meals are not an effective way of maintaining
successful weight control. The body mechanism senses it is being starved and lowers
its BMR to maintain its energy and fat reserves, so reducing the effective way in
which calories are burnt. If carbohydrates are cut out from the body this causes
sodium levels to deplete causing water to be eliminated form the body, glucose is
lost through this process. This causes low blood sugar which then leads to low levels
of energy, dizziness and fatigue. Causing the BMR to decrease even more reducing
the amount of calories needed for fuel.
Another important factor is that glycogen controls the appetite so insufficient glycogen
will give extreme sensations of hunger. The nervous system is activated when glucose
levels fall giving rise to the bodies tendency to binge, this is not a weakness but
the way in which overeating compensates for the body feeling starved.
So we can conclude that weight loss should be gradual combined with a sensible eating
regime - including complex carbohydrates, regular exercise to increase the BMR which
then will lead to effective burning of calories.