These are the most frequently used words in this book.
able
animal
another
antibiotics
aspartame
available
birth
body
called
cancer
cause
cells
change
child
children
come
contain
cows
damage
death
diet
different
digestive
disease
does
down
drugs
eat
effects
electrical
electrically
energy
even
everything
experience
extremely
fact
field
food
form
frequency
function
get
good
grain
health
healthy
high
however
human
immunization
ing
large
levels
life
look
matrix
may
meat
medical
medicine
milk
minerals
modern
molecule
mother
natural
nature
new
now
nutrition
often
part
people
physical
plant
problems
process
products
protein
result
see
source
start
states
symptoms
system
take
time
toxic
tract
two
use
vegetarians
water
without
work
world
years
young