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In
1985 the American Medical Association called a meeting of
experts on the subject of food and behavior. Conclusions from
this conference were summarized as follows: "Dietary
pharmacology is no longer at the fringe of medicine ... foods
do affect behavior...foods
do affect the brain." There is increasing recognition among physicians, nutritionists and parents that nutrition plays an important role when regarding hyperactive and learning disabled children. The relationship between the child's biochemical life and his functional performance is very important. Blood tests reveal that 75 percent of hyperactive-learning-disabled children have low blood sugar and/or allergies. Inadequate
nutrient intake affects the development of the brain most crucially
during the period of rapid growth. In humans this critical period
occurs during the last three months of pregnancy and the first
six months of infancy. And, 90 percent of the total growth of
the brain takes place during the first three years of life! Evidence
is accumulating which details the influence of nutritional status
on neuromuscular functions, behavior and intelligence.
Behavior
and Nutrition
A study conducted on 220 preschool children demonstrated that children who lack optimal amounts of essential nutrients experience reduced attention span and intellectual ability. The same researchers conducted a study at the University of Minnesota in 1960 which showed that students' ability to think was reduced when kept on a nutritionally poor diet, characterized by a lack or imbalance of proteins, fats, carbohydrates and vitamins.
In
recent years, many in the scientific community have devoted their
research to documenting the relationship between nutrients and
brain cell function.
The
brain is dependent on adequate gastrointestinal function for delivering
the essential nutrients it cannot make on its own.
Otherwise,
the brain cannot keep its biological machinery running. In addition
to providing the essential compounds for cellular energy production,
the GI tract must also deliver the ingredients for other critical
brain constituents.
These
include essential fatty acids, or phospholipids, which act as building
blocks for cell membranes, hormones, and certain neurotransmitters.
The
GI tract also carries B vitamins to the brain. B vitamins are
indispensable in synthesizing neurotransmitters and in forming
myelin, the insulating substance that sheaths connections between
neurons and makes it possible for them to transmit messages effectively.
The
Brain-Immune
Connection Top
research institutions worldwide now understand that there is a
two-way chemical dialog between the brain and the immune system.
Each can influence the other directly. There is an ongoing chemical
dialog between the brain and the immune system, a connection that
depends on two languages: the neurotransmitters of the brain,
and the
immunotransmitters
of the immune system. Another study, as reported in Pediatrics, also reported on sugar as a possible instigator of aggressive behavior, hyperactivity, and attention problems exhibited by children with ADHD. In that investigation, children with ADHD who consumed large amounts of sugar showed greater inattention in performing tasks. Meanwhile, investigators reporting in The Journal of Autism and Developmental Disorders revealed that children with ADHD experienced abnormal rhythms in the stress hormone cortisol--an abnormality frequently associated with problems in metabolizing carbohydrates. Yale researchers have confirmed that children with ADD may have a problem in metabolizing glucose, in that offering children doses of oral glucose significantly diminished their ability to concentrate. Learning, Behavior and Allergies Perhaps
these behavioral problems are also manifestations of allergies
caused by foods that are not handled successfully by the body.
In a study conducted at the Institute of Child Health in London,
using an elimination diet resulted in significantly improving
the behavior of a group of hyperactive children. Their behavior
worsened when they were challenged with allergy-provoking foods.
Similarly, in the prestigious medical journal Lancet, investigators
reporting on a study conducted with 185 hyperactive children on
an elimination diet supported the concept that food allergies
are associated with hyperactivity.
In
another report published by Lancet, a carefully designed and executed
study of 76 overactive children found that 62% improved on elimination
diets. Foods causing hyperactivity included colors and preservatives,
soy, milk, chocolate, wheat, oranges, eggs, sugar, and other foods.
In a five-year study conducted on 182 hyperactive children, 136 of the parents noted clear-cut improvement in their child's behavior with an elimination diet. An additional 17 expressed that their child's hyperactivity was "probably related to the diet." The foods causing the hyperactive symptoms were identified as: Sugar . . . . . . . . . . . . . . . . . . 77 Chocolate . . . . . . . . . . . . . . . . . . 28 Colors/additives/flavors . . . . . . 48 Eggs . . . . . . . . . . . . . . . . . . . . 20 Milk . . . . . . . . . . . . . . . . . . . . 38 Wheat . . . . . . . . . . . . . . . . . . . . . 15 Corn . . . . . . . . . . . . . . . . . . . 30 Where
conflicting data exists regarding food allergies, sugar and ADHD,
clinicians generally recommend modifying the diet to eliminate
possible allergenic foods, dietary chemical preservatives, and
sugar to determine whether a particular individual is affected
by any of these factors.
It
is not uncommon to find environmental toxicities, heavy metals,
air and water pollutants along with food additives to serve as
additional irritants, compounding the ADD/ADHD child's and adult's
already internally stressful world.
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