Terms
used in dietary
articles --
7/23/17
http://healthfully.org/rh/id6.html
Abdominal
fat: see visceral fat.
Acetyl-CoA
(Acetyl coenzyme A): its main
function to convey carbon atoms within the acetyl group to the Krebs (citric
acid) cycle to be oxidized. It also
plays an essential role in the metabolism of glucose, degradation of fatty
acids, and the metabolism of amino acids.
It also is one of two components of the common neural transmitter
acetylcholine, the principal neurotransmitter in all autonomic ganglia.
Adenosine
triphosphate, see ATP
Adiponectin is one of the five hormones produced by adipose tissue. Adiponectin
in combination with leptin has been shown to completely reverse insulin resistance in mice. It has
many effects including increase glucose uptake, decrease gluconeogenesis, lipid
catabolism, insulin sensitivity, etc.
Adipose
tissue or body fat or
just fat is loose connective tissue composed mostly of adipocytes.
Human fat tissue contains about 87% lipids. If insulin is elevated there is a net
inward flux of lipids (FFA), and
only when insulin is low can FFA
leave adipose tissue. Insulin secretion is stimulated by high blood sugar,
which results from consuming carbohydrates.
It produces hormones such as leptin, estrogen, resistin, and the cytokine TNFα.
Adipocytes
(lipocytes) fat cells are the cells
that primarily compose adipose tissue.
They specialize in storing fat as energy. There are three types, white,
beige, and
brown. The white cells secrete many
proteins such as such as resistin, adiponectin, leptin and Apelin.
An average adult has 30 lbs. of white cells. The less common brown cells
have a large
quantity of mitochondria which make them brown.
Their mitochondria produce ATP.
Adkins
diet (New Adkins diet ), the
most popular low carb diet, which
consists of 4 phases, the first two weeks is extremely low carbs (induction
phase), followed by a “weight loss phase”, and once weight goal is obtained a
“pre-maintenance phase” where carb level is increased until weight is
stabilized in which it then becomes the “lifetime maintenance phase”.
Advanced
glycation end products (AGEs) the end products of
a reaction in which a monosaccharide bonds to a protein molecule—fructose being
the most reactive common sugar. AGEs are
implicated in many chronic diseases such as macular degeneration, diabetes and
heart disease.
Alanine
aminotransferase, ALT, measured in a blood tells and
used as an indication of liver function—sensitive to the amount of fat in the
liver—see fatty liver disease.
Amino acid: biologically important organic compounds composed of amine (-NH2) and carboxylic acid (-COOH) functional groups, and are
essential nutrients. The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen. There are 21 common amino acids; they are the building blocks
of proteins, peptides and polypeptides.
Anaerobic process:
one which occurs without the presence of oxygen
Aerobic process:
one which occurs in the presence of oxygen
Apoptosis
Atheroma is an accumulation of degenerative material in the tunica intima(inner layer) of artery walls. The material consists of (mostly) macrophage cells,[1][2] or debris, containing lipids (cholesterol and fatty acids), calcium and a variable amount of
fibrous connective tissue.
It is a type of puss from the underlying infection within the artery
wall—a thing pharma doesn’t treat.
Atherosclerosis
(AS) (arteriosclerosis):
results
from a thicken of the artery walls as
a result of the accumulation of the debris from the complex immune system
response white blood cells to pathogens colonizing the arteries tunica media
(see macrophage and LDL). It is the
primary cause of hypertension and ischemic events. See cholesterol
myth for what it isn’t. The Western
high carb diet with polyunsaturated and trans-fats is a major cause of
atherosclerosis.
ATP,
Adenosine triphosphate, the body’s energy molecule: is a nucleoside triphosphate that transports chemical energy created through metabolism
in the
mitochondria and used to power over 90% of the body’s chemical reactions, such
as those which permit muscle contractions and the synthesis of compounds. ATP goes from
a high state of energy to a low state.
The main way ATP goes back to
the high state of energy is through absorbing energy from the metabolism of
carbohydrates or fats in the mitochondria, where ATP is restored to three phosphate
groups (PO4). GTP & NADP also function as energy
molecules.
Bariatric Surgery (weight loss surgery): any
of a variety of procedures that reduce
the size of the stomach or the absorption of food by constructing a gastric
bypass of the duodenum section of the small intestines. Such surgery through
fasting and low
carbohydrate diet in the first month cures over 90% of cases cures type-2 diabetes.
Beta
hydroxybutyrate/butyric acid, synthesized
from acetoacetate which is
derived from fats in their metabolic breakdown to produce ATP. It has biological
functions in the brain that
lower risk of dementia & Parkinson’s disease through up regulating BDNF,
and has other benefits. Best source
coconut oil because of its short chain saturated fats
Beta-oxidation is the catabolic process by which fatty acid molecules are broken
down in
the mitochondrial matrix of eukaryotes to liberate 2-carbon units, acetyl-CoA,
or 3-carbon propionyl-CoA. They condense with oxaloacetate to form citrate at the "beginning"
of the citric acid cycle.to produce ATP.
Bliss point: the
combination of ingredients in manufactured foods that through taste maximizes
sales. The bliss point relies heavily
upon the use of sugar, fat, and salt, of which sugar is the most important
added ingredient.
Body Mass index
(BMI) is a
measurement of relative weight based on an individual’s mass and height,
devised by Adolphe Queteiet of Belgian around 1840. BMI = (mass (lb.)/(height(in))2)/703.07. Normal is 18.5-25; overweight
25-30, and
obese >30 with morbidly obese >40.
Obesity is approximately 25% above lean body weight.
Bolus, in
pharmacology and veterinary medicine around mass of medicinal material larger
than an ordinary pill. A 75 g of glucose
bolus is used in the glucose tolerance test—see glycated hemoglobin.
Brain-derived
neurotropic factor (BDNF), BDNF is
a member of the nerotrophin family of growth
factors related to the canonical Nerve Growth Factor. BDNF acts on certain neurons
of the central
nervous system and the peripheral nervous system , helping to support the
survival of existing neurons and encourage the growth and differentiation of
new neurons and synapses. It is
important for long-term memory. Stimulation
of this factor is increased through exercise,
enhanced cognitive processes, as does a ketogenic diet and fasting through beta hydroxybutyrate.
Calorie
(food) is the heat needed to raise
1 kilogram of water 1 degree centigrade
in a calorimeter. These numbers have
been adjusted to somewhat reflect the potential energy from metabolism, thus
there has been changes in the values compared to older tables. Currently fiber
is 2 calories per gram,
carbohydrate at 4, protein 4, ethanol 7, and fat as 9.
Carbohydrate
(carb) a biological
molecule consisting of a poly-hydrated ketone or aldehyde
with carbon, hydrogen, and oxygen and a formula of Cm(H2
O)n
(with a few exceptions); in biochemistry a saccharide. Common ones are the starches,
sugars, and
fibers which are starches that resist the digestive process. Carbs and fats
are the main sources used by
the mitochondria in the production of ATP.
Cardiovascular
disease (CVD) is a condition involving
atherosclerotic coronary arties. It causes ischemic heart disease, ischemic
events, and angina pectoris. Often the
term CVD is used interchangeable
with coronary artery disease (CAD)
and coronary heart disease (CHD).
Cholesterol, a waxy
sterol that is an essential component of cell walls especially in neurons, thus
essential for new cells. It is used in the production of sex hormones,
digestive bile, cortisol, and much more.
The main blood serum source is from synthesis in the liver (+70%)—not
diet. Cholesterol does not cause atherosclerosis
but pharma claims it does. It is in
plaque because of the healing process producing new cells. Cholesterol content
in plaque ranges from 7
to 22%. Low cholesterol is associated with a higher death rate, while higher
with longevity—see definitive Framingham Study.
Cholesterol
myth: a belief promoted by pharma and their
“experts” (KOLs) that elevated
cholesterol is a major causal factor for CVD.
Basic research has however shown the main
cause is pathogens that colonize the muscular walls of arteries. The serum level
of cholesterol is not associated with CVD
and ischemic events; though pharma
claims it is and treats high cholesterol with drugs, though this doesn’t
prevent ischemic events, though they claim it does. Numerous critics have pointed
this out;
nevertheless, half of all senior take a statin which clearly lowers that
quality of life and increase the rate of mortality from MI by lowering the amount
of ATP
in muscles including the hear. ATP is
what muscles use to causes contraction.
Thus statins weaken the heart muscle make it prone to heart failure and
death.
Chylomicron is a lipoprotein particles that consist
of
triglycerides (85-92%) and phospholipids (6-12%). They transport dietary lipids
from the
intestines and are one of the 5 major lipoprotein groups. When the triqacylglycerol
core has been
hydrolyzed its remants are formed and are taken up by the liver.
Citric
acid cycle see Krebs cycle.
Corn
syrup (glucose syrup, dextrose syrup): syrup made from maize or corn starch; pure
glucose with some maltose and higher oligosaccharides depending on grade. Prepared
by adding alpha-amylase to corn
starch and water, and then glucoamylase.
It is distinguished from high fructose corn syrup (HFCS) which is corn
syrup in which about half of the glucose is converted to fructose by an
enzymatic process.
Coronary
artery disease (CAD) also known as atherosclerotic heart
disease, atherosclerotic cardiovascular
disease, coronary heart
disease, or ischemic heart
disease (IHD), is the
most common type of heart disease and cause of heart attacks. The
disease is caused by plaque building up along the inner walls of the arteries of the heart, which narrows the lumen of arteries and reduces blood flow to the heart.
Cytoplasm: comprises cytosol (intercellular fluid) a gel like substance enclosed within
a cell membrane fluid that fills the inner spaces of eukaryote organisms. The
organelles such as mitochondria, the endoplasmic
reticulum are contained in the cytoplasm.
This fluid in the nucleus is called nucleoplasm.
Protoplasm is both the cytoplasm and the nucleoplasm.
Cytosol (cytoplasmic matrix): the water
soluble components of cytoplasm, constituting the fluid portion that
remains after removal of the organelles and otherintracellular structures. In this plasma occurs protein biosynthesis, the pentose phosphate
pathway, glycolysis (see below), anaerobic metabolism, and gluconeogenesis. Note,
the cytoplasm is the
cytosol plus the organelles.
Dextrose
(grape sugar, dextroglucose) is the
dextro-rotarory isomer of
glucose, occurs widely in fruit, honey, and blood of animals. The most common
form of glucose.
Diabetes
type 2, non-insulin dependent
diabetes mellitus (T2D, T2DM, NIDDM) a
chronic metabolic disorder in which cells become resistant to the glucose
regulatory function of insulin, and thus results in high serum glucose
level. In response the pancreas produces
more glucose but not enough to lower adequately glucose. When symptomatic it
is treated by drugs such
as metformin. Often years later the
level of insulin production by the pancreas declines and insulin is added to
lower serum glucose.
Diabetes
type 1, insulin-dependent diabetes mellitus,
juvenile diabetes (T1D, T1DM) results
from the autoimmune destruction of the insulin producing beta cells in the
pancreas—accounts for 5% of diabetes cases.
Diabetes
type 2, non-insulin dependent
diabetes mellitus (T2D, T2DM, NIDDM) a
chronic metabolic disorder in which cells become resistant to the glucose
regulatory function of insulin, and thus results in high serum glucose
level. In response the pancreas produces
more glucose but not enough to lower adequately glucose. When symptomatic it
is treated by drugs such
as metformin. Often years later the
level of insulin production by the pancreas declines and insulin is added to
lower serum glucose.
Dyslipidemia,
high level serum free fatty acids
Endothelial
cells (cells of the endothelium):
is the thin layer of simple squamous cells that lines the interior surface of blood vessels and lymphatic vessels,[1] forming an interface between circulating blood or lymph in the lumen and the rest of the vessel wall. Endothelial cells in direct contact with
blood are called vascular endothelial cells, whereas those in direct contact
with lymph are known as lymphatic endothelial cells.
Endothelial
dysfunction,. Normal
functions of endothelial cells include mediation of coagulation, platelet adhesion, immune function and
control of volume and electrolyte content of the intravascular and extravascular spaces. Most significant is the inflammation within
the tunica media that produces atheromas.
Like a pimple with puss, the atheroma can leak its contents. Once mature
and harden though constricting
blood flow, it rarely leaks. However,
pharma treats the constriction with drugs that modify neural-transmitter
functions.
Epithelial
cells (of the epithelium): is one of the four basic types of animal tissue, along with muscle tissue and nervous tissue. Epithelial tissues line the cavities and surfaces of blood vessels and organs through- out the body.
There are three principal shapes of epithelial cells —squamous, columnar
and cuboidal. These can be arranged in a single layer of cells, or layers of
two or more cells.
Endothelium, the thin
layer of cells that line the inner surface of blood vessels. Normal functions
include mediation of
coagulation platelet adhesion.
Estrogen,
one of the 4 female human hormones
with a structure similar to
testosterone, but often refers to estradiol (E2), the most bioactive of the
group. There are estrogen receptors on
cells throughout the body. They regulate
the menstrual and estrous reproductive cycles, and are involved in the
regulation of fat storage, metabolism, bone remodeling, coagulation of blood,
salt retention, libido, vaginal lubrication, melanin production, increases
collagen in the skin, cortisol levels, and development of secondary sexual
characteristics. The estradiol drives
buttock fat storage, and falling menopause fat is typically preferentially
stored abdominally, which results in the unhealthy visceral fat.
Fat
(fatty acid) free fatty acids (FFA): a subset of
lipids with a chain of carbon atoms filled with hydrogen, and on last carbon
has the organic acid group--thus is also called “fatty acid”. The
fatty acids are commonly joined in groups
of three through a glycerol molecule to form a triglyceride for storage.
Fatty Acid Metabolism consists of catabolic processes that generate energy, and anabolic processes that create biologically important
molecules (triglycerides, phospholipids, second messengers, local hormones and ketone
bodies). They are the main
energy storage form for vertebrates.. When
compared to other macronutrient classes (carbohydrates and protein), fatty
acids yield the most ATP on an
energy per gram basis, when they are completely oxidized to CO2 and
water by β-oxidation and the citric
acid cycle [Krebs]. Fatty acids
(mainly in the form of triglycerides)
are therefore the foremost storage form of fuel in most
animals, and to a lesser extent in plants. In addition, fatty acids are
important components of the phospholipids that form the phospholipid
bilayers out of
which all the membranes of the cell are constructed (the cell
wall,
and the membranes that enclose all organelles within the cells, such as the nucleus,
the mitochondria, endoplasmic
reticulum,
and the Golgi
apparatus)
Fermentation (lactic acid fermentation,) is
an anaerobic (without oxygen) process which turns pyruvate from glycolysis
into lactic acid. The process takes
place in the cytosol and produces about 1/15th the ATP
of anaerobic metabolism.
Fiber:
dietary fiber is the component in food not broken down by digestive
enzymes and secretions of the gastrointestinal tract. Some of the fiber is
broken down by intestinal bacteria and a small portion is gradually absorbed
through intestinal walls. This fiber
includes hemicelluloses, pectins, gums, mucilages, cellulose, (all
carbohydrates), and lignin, the only non-carbohydrate component of dietary
fiber. Because of the slow absorption
fiber does not cause an insulin spike, and like proteins and fats delays
stomach clearance and thus lowers the
insulin spike following a meal.
Fructose
(fruit sugar) a monosaccharide found
in fruits.
Main sources are the disaccharide sucrose, fruits, and high fructose
corn syrup. It is metabolized in the
liver into either glucose or fat. A
high-carb diet causes the fat from fructose
to be stored in the in the liver. Over
years this can develop into IR and NAFLD.
Also fructose is 7.5 more reactive then glucose, and it is cleared at
about half the rate from the blood than glucose. Through the process of glycation fructose damages the liver and causes our chronic age-related
diseases. Like galactose, fructose is a 5-carbon
ring--glucose is 6.
Hydrogenation
of vegetable oil: the process
whereby hydrogen is attached to a
fat at the point of a double bond in the chain of carbon atoms making up the
fat. This process while improving the
commercial usefulness of vegetable oils (taste and shelf life), creates the
unnatural, unhealthy trans-fats.
Galactose one of the
two sugars in the disaccharide lactose, the other is glucose. It is a reactive
5 ring sugar like fructose,
both of which are 7 times more reactive than glucose, a 6 carbon ring.
Ghrelin
(hunger hormone, lenomorelin, INN): hormone
produced by ghrelinergic cells in the gastrointestinal track which function as
a neuropeptide in the central nervous system, and it plays a significant role
in regulating the distribution and rate of use of energy. Ghrelin
also plays an important role in regulating reward perception in dopamine neurons that link the ventral tegmental area to the nucleus accumbens[7] (a site that plays a role in processing sexual desire, reward, and reinforcement, and in developing addictions) through
its colocalized receptors and interaction with dopamine and acetylcholine. It also goes to the same receptors as leptin,
the satiety hormone.
Glucagon is a peptide hormone, produced by alpha cells of the pancreas, that raises blood glucose levels. Its
effect is opposite that of insulin, which lowers blood glucose levels.[1] The pancreas releases glucagon when blood sugar (glucose) levels fall too low. Glucagon causes the liver to convert stored glycogen into
stored glycogen into glucose, which is released into the bloodstream. High blood glucose
levels stimulate the release of insulin.
Glucose
tolerance test consists of giving
a fasting patient 75 g of glucose and then
measuring plasma glucose ever 15 or 30 minutes for 2 hours. The level of plasma
glucose if at 2 hours is
above 7.8 he is consider to be insulin resistant (impaired glucose tolerance)
and above 11.1 as diabetic; though a better test than HBAc1, literature states
it as inferior.
Glucose a
monosaccharide is the main energy storage molecule for plants; in animals it is
stored as long chain called glycogen.
Glucose is as one half of the disaccharide
sucrose, and is also obtained from the hydrolysis of starches which are long
chains of glucose molecules. Glucose and
fat are the main sources for production of ATP.
Glucoside is a
derivative of glucose. Glucosides are
common in plants, but rare in animals.
Glycated
hemoglobin (HbAc1) measures the amount of
blood sugars over a period of about 20 days, and thus is considered a better
measurement. However, given that rate of
glycation of fructose is 15 times that of glucose, this test fails to exclude
those whose diet is high in fructose from those whose elevated reading is
because of glucose. (Fructose is
cleared from the blood following a soda at haft the rate of glucose.)
Glycation: a process where a monosaccharide
randomly
attaches to proteins and thereby adversely affects the proteins’
functions. Fructose is by far the most
reactive common sugar.
Glycemic
Index see
paragraph at bottom of this section
Glycemic
Load see
paragraph at bottom of this section
Glycerol
(blycerine): a sugar alcohol
consisting of a chain of 3 carbons each with an alcohol group attached. It forms
the bridge to which 3 fatty acids
attach to form a triglyceride.
Glycogen is a multi-branched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. It is analogous to starch.
The polysaccharide structure represents the main storage form of glucose
in the body. A 150 lb. person stores at
most 3 lbs. of glycogen—amount is dependent upon physical conditioning. It
is hydrated with 3 to 4 parts water, thus
making too bulky for mass energy storage.
The main storage area is the liver which has 100 to 120 g of glycogen. In
the muscles up to 2% by weight is
glycogen, where it functions as an immediate reserve source for glucose. Insulin
stimulates the production of
glycogen.
Glycolysis: the
breakdown of glucose to pyruvic acid—an anaerobic process
that only produces 2 ATP compared to the ~29 produced in the Krebs cycle.
Hepatocytes: a
liver cell.
High-density lipoprotein (HDL): is the largest by
size of the five major groups of lipoproteins and constitutes about 30% of the
blood cholesterol (see LDL for composition).
It functions to remove fats and cholesterol from cells including with
the atheroma in artery walls and transport it back to the liver for
utilization. It is called the good cholesterol
because it is
supposed to lower the risk of CVD—see cholesterol myth.
High fructose corn syrup, HFCS,
fructose-glucose syrup: corn (nearly pure glucose) syrup that
has
undergone enzymatic processing to convert some of its glucose into
fructose. HFCS consists of 24% water,
and most commonly 55% fructose and 42% glucose (HFCS 55). It is used as a replacement
for sugar because
of its much lower price.
Homeostasis:
state of body equilibrium, maintenance of a stable internal environment
in a body.
Hormones: steroidal
or amino acid based molecules released to the blood that act as chemical
messengers to regulate specific body functions.
Incretin: class of
hormones secreted by the stomach and intestines which case insulin secretion
and satiety.
Insulin
is the main
blood glucose regulatory hormone
produced by the pancreas. It causes
tissues to absorb and burn glucose and also to store fat (not burn). High
blood insulin is caused by the Western
diet which is high in carbs and thus low in fat. This has caused long-term high
levels of
insulin, and thus the obesity and diabetes pandemics. Blood glucose and to a
much lesser extent the
amino acids arginine and leucine stimulate the production and release of
insulin. Insulin also inhibits the
product of glucose by the liver from fructose and controls fat storage and
glucose metabolism and affects hunger through regulation of the hormone leptin
and ghrelin. Blood glucose, amino acids
arginine and leucine, and various digestive system derived hormones stimulate
the production and release of insulin. Low insulin results in the medical
condition type-1 diabetes. Higher than
normal blood insulin per unit of glucose indicates insulin resistance.
Insulin Index
a measure used to quantify the typical insulin response to various foods. The
Insulin Index is based on the consumption of 1,000kJ (kilo joules) of the given
food. White bread is rated at 100. See
bottom section
Insulin like growth
factor (IGF-1 and IGF-2)), two related hormones similar in structure to
insulin. IGF-1 stimulates cell growth-tissue
growth. Growth hormone (GH) stimulates production. IGF-2 functions to regulate the action of
IGF-1.
§ Insulin
resistance (IR) the condition in which cells have
reduced response to hormone insulin, and this results in a high blood glucose
level. IR first occurs in the
liver, then depending upon diet it can also develop in the muscles and adipose
(fat) cells. The pancreas produces more
insulin in response to the elevated glucose.
The accumulation of fat in the pancreas like that in the liver will
eventually result in organ issues; for the pancreas, the beta cells will through
accumulation of fat and an immune response, reduce their production of insulin.
This results in type-2 diabetes.
Intermediate-density
lipoprotein (IDL): One of the five major groups of lipoprotein
particles that enables fats and cholesterol to move within the water-based
solution of the bloodstream. Their size is from 25 to 35 nm in
diameter, and are In density between LDL and VDL.
Ischemic event, acute ischemic event: acute event causing cell death due to the
sudden lack of blood supply and thus oxygen; commonly used to indicate a heart
attack or stroke.
Ketone
bodies: are water-soluble molecules
derived from fatty acids, There are 3 natural ones: acetoacetic acid, beta-hydroxybutyric
acid;
the third is acetone. Ketones bodies are
picked up by cells and converted into acetyl-CoA.
Ketogenic
diet (KD) is a high-fat, adequate-protein, very low-carbohydrate diet that in medicine is used primarily to treat
difficult-to-control (refractory) epilepsy in children and to starve cancer. The
diet forces the body to burn fats rather
than carbohydrates. Carbohydrates are limited to 20 grams per day—some KDs go
higher.
Ketosis is a metabolic process in which
most of the body’s energy supply (ATP) comes from ketone bodies; an
alternate to glycolysis where glucose provides most of the energy.
Key Opinion
Leaders (KOLs):
leading researchers, administrators, or spokespersons within a specialty
of medicine, who are--with rare exception--beholding to the financial support
given by pharma and reciprocate by presenting pharma’s tobacco science and
providing other services.
Krebs cycle
(citric acid cycle, tricarboxylic acid cycle
(TGA)): is a
series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetate derived from carbohydrates, fats and proteins
into carbon dioxide and chemical energy in the form of adenosine triphosphate (ATP). In addition, the cycle provides precursors of certain amino acids as well as the reducing agent NADH that is used in numerous other
biochemical reactions.