Niacin (Nicotinic
Acid, NA, vitamin B3): In 1955 it
was discovered that niacin has a lipid lowering property, and thus improved the
cholesterol profile (CP). It is the first treatment and remained
the first
choice for hyperlipidemia for the next 3 decades because it very effectively improved
CP, including dramatically raising HDL 33% and lowered the rate of heart
attacks. Long before the first statin PhARMA mounted a campaign against niacin to
promote their patented alternatives.
Currently niacin family accounts for 3% of the CP-treatment market, and less in Europe.
One way that PhARMA marginalized niacin was by
setting up a
treatment protocol that has very low compliance. In their
recommended medicinal dose (1500-3000 mg) to improve CP, niacin causes vascular dilation in skin which produces
a very
uncomfortable flushing. To limit this, PhARMA
recommends starting at a low dose, and gradually increase it over 8 weeks—only
marginally effective. Few will follow
this program long-term. With extended release niacin, the frequency
of
flushing is only modestly reduced--in the once patented Niaspan (75%,
88%). Though liver toxicity is rare, reversible,
and causes a visible jaundice, physicians recommend regular blood work (another
way of discouraging the use of niacin & Niaspan). Moreover doctors believe
that statins are far
more effective, thus most patients are persuaded. 1) Does the evidence support
the protocol? 2) How effective is niacin?
Niacin improves CP by
lowering of plasma triglycerides mobilization from adipose tissue, and
inhibiting hepatocyte diacylglycerol acyltransferace synthesis of triglyceride
thereby lowering cholesterol and thus “inhibits the synthesis of apo-lipoproteins
and the influx of free fatty acids (FFA) into the
liver, which is the precursor of triglycerides.” “A single dose
of niacin 200 mg given in the
fasting state [at bedtime] provides a
prompt and marked fall in serum FFA level,
with a rebound after some hours. A
comparable fall in plasma FFA occurs
normally following a carbohydrate-containing meal, when adipose tissue
lipolysis [making
lipoproteins] is inhibited
by insulin, and re-esterification of
FA in adipose tissue cells is increased by glucose. Therefore, the FFA level is usually low
during the day, when carbohydrates are the
predominant source of calories [thus preventing a niacin caused reduction in
FFA]. Lipolysis becomes active in the post-absorptive state
at night, when the
FFA-level is approximately double the daily mean level”. “Oral administration of
niacin … during the day does not appreciably alter this pattern.” This is why blood cholesterol blood work
requires fasting, and why niacin and IHN should
be taken at night, when the insulin level is low. Thus a low dose at
night-- 200 to 500 mg--is sufficient. Plasma peak is for niacin
1 & INH at
8 hours.
PhARMA thus recommends
mega dose of niacin (ignores INH) to create very low compliance due flushing,
and during the day for minimal effectiveness.
“The Coronary
Drug Project [only published long-term endpoint niacin study] was conducted
between 1966 and 1975 to assess the long-term efficacy and safety of five lipid influencing drugs in 8,341
men with electrocardiogram-documented previous myocardial infraction…. With a mean follow-up of
15 years, nearly 9
years after termination of the trial, mortality from all causes in each of the
drug groups, except for niacin, was
similar to that in the placebo group. Mortality in the niacin group was 11%
lower than in the placebo group.”
“Niacin has been
shown to produce regression of atherosclerosis plaques and is the only drug
that has demonstrated reduction of overall mortality in currently completed
clinical trials [2-4]… The
versatile action of niacin on lipoprotein metabolism, as well as its low cost
and long-term safety record, should make
it the drug of choice in many patients with hyperlipidemia or coronary
artery disease,” September
1991, American Journal of Medicine
V. 91, 239. “Other effects include anti-thrombotic and vascular inflammation,
improving endothelial function and plaque stability;” also
noted. These later effects are more important than its improvement
in CP
for reduction in risks. Results for
niacin are comparable to low dose statins
for CP, but without the serious side effects, and superior endpoint results.
Nicotinyl alcohol
(pyridylcarbinol)
is a niacin
derivative used as a hypolipidemic agent and as a vasodilator. Literature contains only 3 clinical trials (2
published in German). These were quite
favorable. PhARMA seeks to maximize
profits.
Extended-release
niacin (Niaspan etc.) All studies are done according to PhARMA’s
protocol of high dose during day.
Xantinol {xanthinol}
nicotinate, only one study on CVD: high dose caused flushing, and 25 of 33 patients
were helped significantly. It has an antiplatelet action and
dilates most blood vessels.
Nicotinamide
also
known as niacinamide and nicotinic acid amide (vitamin B3) (what niacin is
converted to for its function as a vitamin). It doesn’t cause
flushing; however as the
amide of niacin it does
not lower cholesterol—see also the 1959 study,
and the CP. But it is effective in the treatment of acne and some cancers.
Inositol hexanicotinate
(IHN): The
literature is thin, since PhARMA members won’t research a flush-free, effective
treatment for CP. Though IHN
releases niacin, it does at too low a
rate to affect the same bio-pathway as niacin (peak for Niacin is 45
minutes, IHN 8 hours). (A criticism by
PhARMA, shown false in a quality study using blood samples drawn at night). INH
affects
Free Fatty Acids (FFA), rather than lipolysis as does niacin and statins.
“FFA
is a precursor of plasma triglycerides. Lipolysis becomes
active in the
post-absorptive state at night, when the FFA-level is approximately double the daily
mean level…. The
Xanintol esters and IHN were superior at lowering FFA,” at Eur. J. Clin.
Pharmacol. 16, 11-15 1979. In another
study “At 6 weeks of usage [1650 mg IHN] found a nearly 20% improvement in
cholesterol profile”. Given a bio-pathway not
effecting CoQ10, on thin evidence jk recommends INH over niacin.
Phenolic substances
in red wine shown to inhibit
oxidation in LDL. Lack of quality
studies leaves benefits speculative. For
example it has been known for at least 70 years that alcoholics (not just
winos) have lower incidents of atherosclerosis.
Estrogen levels (and presumable testosterone) which are higher with
alcohol. It could be a factor, since
those in the highest quintile of these hormones have the lowest incidence of
cardiovascular disease.
Hormone replacement
therapy (HRT) testosterone and especially estradiol are cardiovascular
protective. Once eliminating PhARMA’s
marketing science, the evidence in support of HRT is overwhelmingly positive.
Aspirin: a 325 mg for
not just preventing heart attacks but also cancer, cancer survival, Alzheimer’s
disease, etc.
Fish oil (omega-3
fatty acids):
recommended
dose by American Heart association 1 gm per day based on thin science.
CoQ10 (Q10): reduced
oxidation of low-density lipoprotein[43][44]; essential
for muscle contraction including
the heart.
Nutritional Yeast
and red
yeast extract: lowers
cholesterol in
rats by effecting organoleptic
properties (LDL and VLDL).
RECOMMENDATION: For those with CVD or cholesterol
above 300 below who are below 75 years: IHN 200-500 mgs before retiring is the
sensible intervention because
of its reasonable price, lack of
side effects, and its effect upon free fatty
acids. A second choice would be
niacin (instant release), also 200-500 mgs.
Both could be taken. For
cholesterol level under 300, the benefits are minor unless other risk factors
are present for CVD. To counter
niacin’s effect upon ATP production, 300 mgs of CoQ10 should also be
taken. The research behind CoQ10 supports everyone
taking it because it is an effective anti-oxidant in the in LDL thus reducing
atherogenesis and protects the mitochondria.
Given Q10’s safety and those two benefits, I would give it to children
(atherogenesis is present in
all children). The decline of
endurance with age is a result of life-long oxidative damage to the
mitochondria. Nutritional yeast,
a source of niacin, lowers
CP. Sorry, but definitive
research has not been conducted. Read Marking
Science, and be skeptical of medical
“wisdom”.
JK has since 1991 taken 325 mgs
aspirin, testosterone since 2003, daily exercise since 1974, and 7 gm daily of
nutritional yeast sprinkled on foods since 1981—his CP is 165 and blood
pressure 125 over 75.