1. Increased Alertness and Insomnia
Most energy drinks contain caffeine and herbal stimulants
that stimulate the central nervous system, giving a sense of
alertness. This stimulation can cause a person who is sleepy
to wake up. However, it can also prevent a person desiring to
sleep from dozing off. In addition, the caffeine in energy
drinks blocks the effects of adenosine, a chemical in the brain
involved in sleep. This in turn activates neurons in the brain
as though there were an emergency, often preventing sleep
and causing insomnia.
Most energy drinks contain caffeine and herbal stimulants
that stimulate the central nervous system, giving a sense of
alertness. This stimulation can cause a person who is sleepy
to wake up. However, it can also prevent a person desiring to
sleep from dozing off. In addition, the caffeine in energy
drinks blocks the effects of adenosine, a chemical in the brain
involved in sleep. This in turn activates neurons in the brain
as though there were an emergency, often preventing sleep
and causing insomnia.
activated, the pituitary gland releases adrenaline. This
hormone makes the heart beat faster and consuming the
large dosage of caffeine found in energy drinks can lead to
high blood pressure and heart palpitations.
large dosage of caffeine found in energy drinks can lead to
high blood pressure and heart palpitations.
3. Increased Blood Sugar
When adrenaline is released into the system, this causes the
liver to release extra sugar in to the bloodstream for energy.
In addition, energy drinks contain high amounts of sugar,
which can be digested easily and also used as a quick source
of energy. When consumed, the body experiences a sugar
high then often crashes. The sugar enters the bloodstream,
provides a blast of energy and when the sugar is burned up,
30 to 45 minutes later, the body usually experiences a sugar
crash. At this time feelings of dizziness, slowed reflexes and
decreased performance may occur.
When adrenaline is released into the system, this causes the
liver to release extra sugar in to the bloodstream for energy.
In addition, energy drinks contain high amounts of sugar,
which can be digested easily and also used as a quick source
of energy. When consumed, the body experiences a sugar
high then often crashes. The sugar enters the bloodstream,
provides a blast of energy and when the sugar is burned up,
30 to 45 minutes later, the body usually experiences a sugar
crash. At this time feelings of dizziness, slowed reflexes and
decreased performance may occur.
4. Dehydration
Caffeine is a diuretic or substance which causes urination.
The caffeine in energy drinks causes the kidneys to move
extra fluid into the urine, which can lead to dehydration if
done while sweating during exercise. The high levels of sugar
in energy drinks slow the absorption of water that dilutes the
sugar in the bloodstream, enhancing dehydration. Also,
consuming a drink with a high sugar concentration before an
athletic performance can cause gastric distress and diarrhea,
resulting in dehydration.
Other possible side effects include headache, nausea, jitters,
chest pain, restlessness, numbness and tingling in the hands
and feet, increased weight loss, increased endurance,
increased metabolism, anxiety, irritability and indigestion.
Caffeine is a diuretic or substance which causes urination.
The caffeine in energy drinks causes the kidneys to move
extra fluid into the urine, which can lead to dehydration if
done while sweating during exercise. The high levels of sugar
in energy drinks slow the absorption of water that dilutes the
sugar in the bloodstream, enhancing dehydration. Also,
consuming a drink with a high sugar concentration before an
athletic performance can cause gastric distress and diarrhea,
resulting in dehydration.
Other possible side effects include headache, nausea, jitters,
chest pain, restlessness, numbness and tingling in the hands
and feet, increased weight loss, increased endurance,
increased metabolism, anxiety, irritability and indigestion.
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