Please Define the Following Terms or Concepts in No More

Please define the following terms or concepts in no more than two sentences, and give an example to support your definition.
A. Absorption
B. Antioxidants
C. Aspartame
D. Bioavailability
E. Bioflavonoids
F. Carbohydrates
G. Digestion
H. Echinacea
I. Essential fatty acids
J. Fats
K. Fat-soluble vitamins
L. Frankenfood
M. Free radicals
N. Genetically modified organisms (GMOs)
O. Green leafy vegetables
P. Methylated xanthine
Q. Mineral deficiency
R. Monosodium glutamate (MSG)
S. Nutraceuticals
T. Nutrient density
U. Partially hydrogenated oil
V. Phosphoric acid
W. Proteins
X. Trans fatty acid
Y. Vitamin supplements
Z. Water-soluble vitamins