Facing Biological Degeneration
The aging population is turning to nutrition to avoid and manage
degenerative diseases
by Steve Myers
Boomers and pre-Boomers live under the looming threat of degenerative
diseases, such as heart disease, cancer, Alzheimer’s, diabetes and
osteoporosis. Lifestyle, diet and the process of aging all partially determine
the development and progression of these diseases, giving older generations a
fighting chance at a healthier life beyond the mid-century mark. From free
radicals to inflammatory immune cells, the molecular details of biological
degeneration can be addressed by nutritional products, as evidenced by a
continuous flood of research findings.
A degenerative disease is a non-infectious illness marked by
progressive deterioration of body tissues and organs due to normal wear and
tear, lifestyle and diet. These diseases plague federal lists of prevalent
maladies and causes of death among Americans, and they cost the country billions
in health care expenses. What’s more, many patients suffer numerous debilitating
symptoms and experience a steady decline in quality of life.
Genetic factors are prominent in the development and pathology
of degenerative disease, but ongoing poor nutrition can certainly be a catalyst.
This has turned the research spotlight on nutritional compounds and how they can
help manage the risk, onset and progression of these devastating maladies.
Supplements for Multiple Degenerative Conditions
Perhaps due to their connection to aging and general diet,
numerous degenerative diseases share risk factors and natural solutions, making
some supplements beneficial for the management and prevention of many of these
diseases. For instance, Frederic Vagnini, M.D., director of the Cardiovascular
Wellness Center in Long Island, N.Y., has noticed a crossover between heart and
Alzheimer’s diseases in terms of lifestyle factors and conditions that
increase risk of both diseases. He reported a study sponsored by Kaiser
Permanente and involving 9,000 adults showed known risk factors for
cardiovascular disease (CVD), including smoking, high cholesterol and
hypertension, were also risk factors for dementia. In fact, he has seen a number
of cognitive impairment conditions in his cardiovascular practice. “Hypertension,
stress, elevated cholesterol and obesity all undermine the vascular system in
the heart; it is not surprising that they also negatively affect the same
vascular system which delivers blood to the brain,” Vagnini said. “And it is
logical to conclude those nutrients that relieve heart disease—antioxidants,
fish oils and folic acid —will also be effective against the onset of dementia
and Alzheimer’s.”
Among the beneficial compounds for both CVD and Alzheimer’s
are essential fatty acids (EFAs),
primarily long-chain omega-3s. Doug Bibus, Ph.D., scientific advisory board
member for Coromega, reported purified fish oil has become one of the most
popular supplements on the market today. He noted the expanded research and
attention prompted the American Heart Association (AHA) to recommend fish oil
supplementation to provide 1 g/d of docosahexaenoic
acid (DHA) and eicosapentaenoic
acid (EPA). The GISSI Prevenzione trial demonstrated
heart attack survivors taking 1 g/d of marine EFAs experienced significantly
reduced overall deaths from CVD, as well as reduced incidence of stroke and
recurring heart attacks.1 Additional clinical research found fish oil containing
EPA and DHA has decreased incidence of stroke by as much as 28 percent and
incidence of thrombotic infarction by 33 percent.2 Overall, science has shown
these marine-source omega-3 fatty acids protect against heart disease via
several mechanisms of action, including antiarrhythmic, antithrombotic,
antiatherosclerotic and anti-inflammatory activities, lowering blood pressure,
lowering triglyceride concentrations and improving endothelial function.3
EFAs from flaxseed are
similarly effective against CVD, as flaxseed oil increases both EPA and alpha
linolenic acid (ALA) in the body.4 ALA from flax has been shown to decrease endothelial
activation and vascular inflammation,5 in addition to reducing levels of
C-reactive protein (CRP)—a primary marker of inflammation.6
Omega-3 long-chain EFAs are equally important to brain health,
as they provide physical building blocks crucial to the development and
maintenance of the structural and functional integrity in the brain, including
neuronal cell membrane phospholipids.7 The prominent fatty tissue in the brain
is comprised mainly of DHA, and deficiencies or imbalances of EFAs can adversely
affect brain health. French scientists discovered the process of aging causes
negative changes to the brain’s fatty acid composition of structural
phospholipids—particularly DHA—that could possibly impair cognitive
function.8 They later found DHA-rich eggs could correct these alterations
in the hippocampus region of the brain,9 which is the site of deterioration in
Alzheimer’s. An early 2005 study showed chronic administration of DHA
increased antioxidant defenses in an animal model of Alzheimer’s disease,
suggesting the fatty acid may prevent learning deficiencies associated with the degenerative condition.10
Still further evidence of the benefits of EFAs across a broad
range of degenerative diseases has been offered by arthritis researchers, who
cite anti-inflammatory actions. Gamma linolenic acid (GLA)
appears to manage rheumatoid arthritis (RA) by inhibiting certain pro-inflammatory cells, including interleukin-1 (IL-1) and
TNF-alpha.11 Among the many researched sources of GLA, evening
primrose oil reduced RA pain and stiffness;12borage
oil reduced prostaglandins, cytokines and various
oxygenation products associated with inflammatory arthritis;13 and black
currant oil, which contains both GLA and ALA, suppressed inflammation and joint tissue injury.14
As for fish oil EFAs in bone and joint management, studies
have shown marine fats can control anti-inflammatory prostaglandins, cytokines,
chemokines and degradative enzymes in RA patients,15,16 in addition to affecting
intracellular signaling pathways, transcription factor activity and gene
expression.17,18 These mechanisms of action underlie fish oil’s beneficial
effect on arthritis symptoms, including tender and swollen joints, morning
stiffness, joint pain, fatigue and grip strength.19
Beyond the impact on inflammatory cells, omega-3s can benefit
bone health by preserving bone mineral density (BMD), a factor in degenerative
bone disease, or osteoporosis. A 2005 University of California, San Diego, study
confirmed an inverse relationship between BMD and the ratio between omega-3 and
-6 fats.20 They concluded a more balanced intake of omega- 3 and -6 fats could
help preserve skeletal integrity in old age. EFAs have also been found to
inhibit osteoclast generation and activation,21 while positive bone mineral
conservation was correlated to high intake of omega-3s and isoflavones.22
Isoflavone-rich soy can
not only help improve BMD23 by stimulating bone formation and suppressing bone resorption,24 but it is also useful in other degenerative diseases, such as
CVD and cancer. AHA recommended soy protein for cholesterol management, and the
Food and Drug Administration (FDA) authorized a health claim involving the
intake of 25 g/d of soy protein for reduced risk of heart disease, as
consumption of soy has been linked to improved plasma lipid profile and vascular activity, as well as reduced LDL oxidation.25
While isolated soy protein has improved the HDL-to-LDL ratio
in diabetics26 and lowered LDL cholesterol in heart patients,27 there is some
debate about whether the benefits of soy on heart health are due to the protein
or the isoflavones. A
meta-analysis of heart studies involving high and low isoflavone levels and soy
protein intake revealed high isoflavone levels more drastically lowered LDL
cholesterol.28 Further study has shown higher intake of isoflavones can also
lower triglycerides and reduce CVD risk factors.29 On the other hand, a recent
controlled trial conducted in three Chinese communities found soy protein
lowered both diastolic and systolic blood pressure,30 which lead to theories
that soy protein could be useful in preventing and treating hypertension.
Soy protein and isoflavones have also proven useful in
lowering the risk of numerous cancers, including prostate,31 colorectal32 and breast carcinomas.33 In particular, a soy
protein diet can increase apoptosis in prostate cancer cells,34 while soy isoflavones genistein and daidzein can hinder prostate carcinoma growth and
tumor development.35 A recent meta-analysis performed by Washington University,
St. Louis, and the Solae Co., involving studies from the United
States, Canada and Asia, revealed a 30-percent reduction in risk of prostate
cancer among men who regularly consumed foods containing soy protein.36
Clinical trials have also found soy can lower PSA
(prostate-specific antigen), a marker of the disease. In colorectal cancer, soy
reduced colonic abnormalities that can lead to cancer development,37 while genistein has promoted apoptosis in colon cancer cells.38 Genistein similarly
inhibited tumor growth in the MCF-7 breast cancer model,39 and generated a
40-percent reduction in tumors in the F3II breast cancer model.40 In additional
study, genistein functioned comparatively to the drug Tamoxifen in inducing both
apoptosis and reducing cancer cell proliferation.41 However, the isoflavone has
been found to promote certain breast cancers in women under certain
circumstances,42 so it is especially important for consumers to keep their
physicians informed of genistein supplementation.
One of the triggers of the degenerative process of cancer and
other diseases is damage to DNA and other crucial organ, vascular and skeletal
cells by free radicals. Thus, certain antioxidants are
common primary nutritional tools in cancer in heart disease management, and are
being investigated for similar roles in osteoporosis, arthritis, dementia and
diabetes. Antioxidant vitamins and minerals factor in most degenerative
diseases. Plasma antioxidant levels have been shown as important factors in arthritis,43 osteoporosis,44
CVD,45 diabetes46 and cancer.47 Their primary role in cancer
is to support the immune system’s resistance of cancer development, although
they have also demonstrated specific beneficial activities in certain cancers.
Vitamin C may prevent lung48 and
bladder,49 cancers but it contributes more broadly to cancer management
by promoting antibodies and interferon, which is important in attacking
tumors.50 This antioxidant has shown promise in improving BMD in osteoporosis,51
and may prevent bone destruction while supporting normal bone structure.52 In
arthritis, vitamin C is extolled for its well known role in collagen production,
as type II collagen is present in articular cartilage. Scientists have further
indicated vitamin C promotes synthesis of aggrecan, an aggregating chondroitin
sulfate proteoglycan that comprises 10 percent of cartilage weight.53 Cognitive
performance and dementia are also impacted by vitamin C levels, which appear to
be protective against degenerative decline.54,55
Vitamin E might have suffered some
bad media-driven attention recently, but its benefit to CVD, Alzheimer’s,
cancer and diabetes has been well documented. While vitamin E was recently found
to increase, but not decrease, CVD mortality in one study,56 the recent Women’s
Health Study found 600 IU taken every other day did not increase mortality but
led to a decrease in CVD deaths in healthy women.57 On protection against CVD
development, two additional studies showed alpha-tocopherol can protect against
LDL oxidation.58,59 Vitamin E has also improved cardiovascular parameters of
diabetes,60 and the National Health and Human Nutrition Examination Survey
(NHANES) revealed subjects with metabolic syndrome had low plasma levels of the vitamin.61
In brain health, vitamin E can counteract cognitive decline
and protect against neuronal damage. Data from the Chicago Health and Aging
Project showed high vitamin E intake reduced cognitive aging by eight to nine
years.62 And based on antioxidant measurements in cerebrospinal fluid, vitamin E
may also delay development of Alzheimer’s63 and Parkinson’s diseases.64 More recently, researchers from the Harvard School of Public
Health investigating the role of oxidation in brain disease reported vitamin E
can decrease risk of mortality from myotrophic lateral sclerosis (ALS), a
neurodegenerative disease also known as Lou Gehrig’s disease.
In cancer, vitamin E shields the immune system from oxidative
stress, specifically defending white blood cells and the thymus gland, which regulates T-cell proliferation.65 On specific cancer sites, increased blood levels of vitamin E
during the early development of lung cancer can limit the progression of the
disease.66 And dietary intake and plasma levels were shown as important to development of liver,67 cervical,68 breast69 and prostate70 cancers.
Vitamin A is also effective against
cancer and heart disease, although its role in bone and joint degeneration is
mixed—excess levels might promote hip fractures by promoting bone
resorption,71 while deficiency is common in arthritis patients.72
Its positive effect on cancer is partially due to its
supporting the production of white blood cells, including T-helper cells.73 In
fact, derivatives of vitamin A have successfully inhibited lung cancer cell
growth while promoting cancer cell death.74 In colon cancer, the vitamin A
pre-cursor betacarotene has
inhibited tumor growth and increased cancer cell apoptosis.75 In vitro study has
shown natural killer (NK) cells treated with beta-carotene exhibited increased
anti-tumor activity.76 Most recently, beta-carotene has been investigated for cardioprotection, as Harvard researchers reported dietary intake of
beta-carotene decreases risk of heart attack.77
Fellow carotenoids lycopene and
astaxanthin have also
garnered a wide range of degenerative disease research attention, as carotenoids
protect cells and tissue from oxidation. In fact, the most recent study on
carotenoids showed blood levels of alphacarotene, beta-carotene,
beta-cryptoxanthin, lutein/zeaxanthin and lycopene are inversely related to risk
of type II diabetes.78 Also, low concentrations of carotenoids—including
astaxanthin, alpha-carotene, lycopene, zeaxanthin and beta-cryptoxanthin—were discovered in numerous colon cancer cases.79
More specifically, astaxanthin has demonstrated an ability to
improve antitumor immune response,80 while lycopene, primarily from tomatoes,
excels at quelling singlet oxygen and protecting tissue in many prime cancer
locations—liver, lungs, breasts and prostate.81
Higher intake of lycopene-rich vegetables such as tomatoes can
also affect the scope of human papillomavirus (HPV) infection, which can lead to
cancer development.82 And, liver cancer was suppressed in high-risk patients
given 10 mg lycopene, 10 mg of carotenoids and 50 mg of alpha-tocopherol (as
Lyc-OMato ®, from LycoRed).83 Plasma levels of lycopene are similarly important
to breast cancer risk,84 and the carotenoid has inhibited the MCF-7 breast
cancer cell line.85 However, lycopene might be most beneficial in prostate
cancer, as the carotenoid has lowered PSA and other prostate cancer markers by
as much as 17.5 percent,86 and has also helped decrease tumor size.87
In CVD, lycopene works as an antioxidant, in addition to
impacting LDL degradation and particle size, as well as altering endothelial
function.88 Researchers reviewing Kuopio Ischaemic Heart Disease Risk Factor
Study data associated low serum lycopene levels with significantly increased
risk of acute coronary events or stroke, as well as significantly higher IMT
(intima-media thickness) of the carotid artery.89
For its part in degenerative disease, astaxanthin (as
AstaREAL®, from Fuji Health Science) has recently exerted beneficial
antioxidant protection against hypertension, stroke and vascular dementia in a
Japanese trial.90 This colorful carotenoid has also proven useful in arthritis
as both an antioxidant and anti-inflammatory supplement ingredient. Scientists
found it inhibits nitric oxide production and suppresses gene expression
associated with inflammatory diseases, such as rheumatoid arthritis (RA). Its anti-inflammatory effects were highlighted in another
trial, as astaxanthin (as BioAstin®, from Cyanotech) improved pain and mobility
scores in RA patients after four and eight weeks of supplementation.91
Besides carotenoids and isoflavones, there are numerous other
phytochemicals in fruits, vegetables and plants that help tame all kinds of
degenerative diseases. Like soy and fish, tea is a popular medicinal dietary
staple, and scientists have increasingly focused on the antioxidant benefits of tea
catechins in most major degenerative diseases. Green
and black tea catechins can scavenge free radicals before cell damage occurs.92
Green tea has been linked to reduced risk of breast cancer,93 but study findings
on other cancers have uncovered more detailed actions. Tea’s epigallocatechin
gallate (EGCG) can cause prostate cell cancer death by inducing expression of
the gene clusterin,94 while EGCG and its sibling ECG promote apoptosis in and inhibit growth of cervical cancer cells.95
In liver cancer studies, catechins from green and black teas
have been equally effective in reducing the size of chemically induced tumors in
mice.96 These flavonoids are no less aggressive against heart disease, as
researchers have reported tea catechins work as direct and indirect
antioxidants, increasing resistance to lipid peroxidation and decreasing
atherogenesis.97 On its own, EGCG has decreased cytokines responsible for the
destruction of pancreatic beta-cells in diabetes study,98 while black tea intake
improved BMD and was inversely related to bone concentrations of vital calcium
and phosphate in a Presidency University, Calcutta, study.99 Tea antioxidants
have similarly shown great promise in neurodegenerative diseases, as Japanese
researchers found tea catechins can prevent DNA damage in brain cells.100
Specifically, EGCG from green tea prevented oxidative damage
in a Korean in vitro study, increasing the survival of hippocampus cells exposed
to amyloid protein—a factor in Alzheimer’s—in addition to decreasing reactive oxygen species (ROS).101
Free radicals are especially damaging to the brain, according
to Barry Halliwell, M.D., renowned neurodegenerative disease researcher and
director of the NUS Graduate School for Integrative Sciences and Engineering,
Singapore. “The brain is very prone to free radical attack, the damage from
which is elevated in all the major neurodegenerative disease,” he said. “Sadly,
most dietary antioxidants do not cross the blood brain barrier, so a good diet
is needed over many years to raise brain antioxidant levels.”
A University of Western Australia, Perth, study revealed
combination antioxidant therapy in an animal model resulted in increased life
span and a marked reduction in inclusion body formation in the hippocampus.102
According to the researchers, antioxidant therapy might be
therapeutically effective against neurodegenerative diseases. Among the
antioxidants in this study were vitamin C and French
maritime pine bark extract (as Pycnogenol®, from
Horphag). Earlier study showed Pycnogenol could reduce vascular damage caused by
beta-amyloid protein, one of the hallmarks of Alzheimer’s disease.103 This vascular protection is the prominent action of
Pycnogenol, which has been beneficial to other degenerative diseases involving
vascular factors.
Pycnogenol can improve endothelial function in mildly
hypertensive patients,104 in addition to protecting against oxidative stress,
inhibiting platelet aggregation and reducing LDL cholesterol levels.105,106 The
antioxidant also improves endothelial function and lowers blood glucose levels
in people with type II diabetes,107 and can augment capillary resistance and
retinal leakage in diabetic retinopathy cases.108 Researchers from Loma Linda University, California, reported
Pycnogenol can inhibit expression vascular adhesion molecule-1 (VCAM-1) and
intercellular adhesion molecule-1 (ICAM-1), making the supplement useful in
atherosclerosis, diabetes and cancer metastasis.109 Additional study by these
same researchers showed Pycnogenol selectively induces death in human mammary
cancer cells (MCF-7) without affecting normal human mammary cells.110
Fellow antioxidant coenzyme Q10 (CoQ10)
may be most important in degenerative diseases for its role in the mitochondria,
where it helps maintain cellular energy. CoQ10 has been well researched in heart
health. It has demonstrated favorable activity on patients with heart disease,
including increasing cardiac output and reducing stroke volume,111 as well as reducing hypertension.112 Additional studies have found combined supplementation of
CoQ10 with vitamin E reduced atherosclerosis progression and increased plasma
resistance to lipid peroxidation.113 The coenzyme is also an effective
counteractive tool for patients using statin drugs. According to research, use
of statins for as few as 30 days can significantly decrease blood concentrations of CoQ10.114
People with diabetes often experience cardiovascular
complications, suggesting CoQ10 could be effective in managing diabetes. In
fact, research has discovered CoQ10 supplementation can reduce systolic and
diastolic blood pressure in Type II diabetics with dyslipidema.115 University of
Western Australia, Perth, scientists noted CoQ10’s ability to improve endothelial function in diabetes
might be due to the supplement’s antioxidant actions.116 They explained
increase oxidative stress in diabetes contributes to the development of
endothelial cell, which CoQ10 improves by recoupling endothelial nitric oxide
synthase (eNOS).117 University of Toledo, Ohio, researchers added CoQ10 can
protect islet cells—pancreatic cells that produce and secrete insulin—from
oxidative damage caused by free radicals.118
Antioxidant activity is also indicated in research on CoQ10
and cancer. Deficiencies of the coenzyme have been found in cancer patients,
especially in those with cervical cancer,119 and researchers suggested the
supplement might limit the toxicity of cancer treatments.120 However, CoQ10’s
impact on prostate cancer was more explicitly defined by researchers from the
University of Granada, Spain, who showed CoQ10 supplementation significantly
lowered cell growth of the pC3 cancer line without affecting normal cells.121
Reduced mitochondrial levels of CoQ10 have also been found in
Parkinson’s disease patients.122 Degeneration of dopaminergic neurons
progresses this neurological disease, while mitochondrial dysfunction and
oxidative damage play a key role in both Parkinson’s and Alzheimer’s.123
Pretreatment with CoQ10 significantly reduced neuronal death in a Parkinson’s
cell study,124 while Austrian research revealed the preserving potential of
antioxidant and bioenergetic CoQ10 against various models of oxidative stress in Parkinson’s.125
It makes sense that certain antioxidants would be so effective
in numerous degenerative diseases, but similar wideranging benefits have been
associated with non-antioxidant B vitamins. A
recent study concluded cognitive disease depletes vitamin B12 and folate
levels,126 while previous study found mental decline is marked by reduced levels
of B6, B12 and folate.127 Folate has further demonstrated the potential to help
prevent brain degeneration in Alzheimer’s disease.128 University of
California, Los Angeles, researchers concluded folate intake at above the
recommended dietary allowance (RDA) of 400 mcg/d could lower the risk of
Alzheimer’s by as much as 55 percent.129 In other neurodegenerative study,
vitamin B1 inhibited neurotoxicity and degeneration of the cerebellum,
especially in cases of high dietary alcohol intake. In bone and joint research,
adequate vitamins B6 and B2 were associated decreased incidence of
osteoarthritis,130 and folate and B12 intake reduced hip fractures following stroke.131
Folate and B12 have also been indicated in prevention of
various gastrointestinal cancers, especially colon cancer.132 Adequate intake of folate, B12, B2 and B1 were also linked to reduced risk of cervical cancer.133 Meanwhile, vitamin B6 supplementation can not only decrease the risk of colon cancer,134 but it also impedes tumor growth and cancer metastasis.135
The effects of B vitamins on heart disease are more defined.
Folic acid can reduce high homocysteine levels associated with venous
dysfunction and increased risk of CVD. Accordingly, low levels of folate can double the risk of heart
attack,136 while high folate intake can reduce the risks of both peripheral
artery disease137 and ischemic stroke.138 A recent Harvard study found younger
women taking 1,000 mcg/d of folate from both food and supplements experienced a
45-percent reduced risk of hypertension.139 Fellow B vitamin niacin is well
studied for its ability to increase beneficial HDL cholesterol,140 which led to
investigations of combining the vitamin with statin therapy to reduce carotid IMT.141
One study found niacin taken in conjunction with lovastatin
not only increased HDL, but lowered LDL and triglyceride levels.142
Also from the vitamin B family, biotin appears to work
effectively against diabetes. “Biotin and R+ alpha lipoic acid work on the degenerative disease cellular level, via different pathways, to increase glucose
uptake, improve insulin sensitivity and mediate insulin signaling,” said Laurence Berube, president of Glucorell, Inc. “Together
these balanced nutrients have a superior impact on glucose metabolism to those
of popular drugs.”
Disease-Specific Supplementation
There is a healthy list of nutritional ingredients
well-researched for one or two specific degenerative diseases; however, this
focus does not render these supplements any less effective than their
multi-disease counterparts. Rather, these disease-specific nutrients have very
distinct mechanisms of action that have proven powerful against particular
degenerative activities. Following are a select few of those compounds. (For
more in-depth review, check out www.hsrmagazine.com for our disease-specific
in-depth feature articles.)
Curcumin from
the curry spice turmeric also has both antioxidant and anti-inflammatory
properties useful in neurodegenerative disease, but research has shown it can
also inhibit formation and build-up of amyloid proteins related to Alzheimer’s.143
Among flavonoids, grape seed
extract reduces LDL peroxidation144 and increases NOS
expression, protecting endothelial cells and promoting vasodilation.145Cocoaflavonoids may lower blood pressure, improve
endothelial function and decrease platelet activation.146Citrus
bioflavonoids, including naringin, hesperedin and tangeretin, can also lower blood pressure,147
in addition to reducing aortic fatty streak in high
cholesterol diets,148 modulating apoBcontaining lipoprotein metabolism,149 and
lowering total cholesterol and triglycerides.150 An increasingly popular source
of flavonoids, pomegranate can
protect against LDL oxidation,151 reduce atherosclerotic lesions152 and decrease
carotid IMT.153 Recent research shows the fruit can improve blood flow.154
Medicinal mushrooms and
their many compounds are heavyweights in cancer research. Beta-1,3- and
1,6-glucans in mushrooms can support macrophages,155 NK cells156 and various T-cells.157 Beta-Dglucans from maitake
mushroom suppress tumor growth by increasing interleukin and stimulating NK
cells,158 while beta glucans (as WGP-3,6, from Biothera) can improve long-term
cancer survival by engaging the immune response and working synergistically with
conventional treatments.159 A mushroom hybridization, AHCC, can further enhance
immune response by increasing certain white blood cell activity,160 and has been
effective in increasing survival rate in liver cancer.161 Mushrooms also contain arabinogalactans, which have been shown
to increase production of key immune blood cells and promote NK cell activity.162
Calcium and
its symbiotic partner vitamin D increase
BMD163 and help reduce hip and other fractures.164Phosphorous
bound to calcium supports bone formation while
inhibiting bone resorption.165 And magnesium deficiency
has the opposite effect on bone formation and resorption,166 and been linked to bone loss due to reduced bone mineral content.167
In joint health, there are several compounds that support
the body’s own production of collagen, glycosaminoglycans
(GAG), and synovial fluid, which contains hyaluronic
acid (HA). Hydrolyzed collagen (as BioCell Collagen II™,
from BioCell Technologies) protects against articular cartilage degradation and
stimulates collagen synthesis,168 and relieves pain associated with
arthritis;169 while undenatured type II collagen (as UC-II®, from InterHealth)
also reduces pain and mobility symptoms of arthritis.170 Both forms of collagen
also address inflammatory arthritic symptoms, such as joint pain, stiffness and swelling.171,172
“Our most recent research showed that BioCell Collagen II
actually inhibits hyaluronidase, which is the enzyme that breaks down hyaluronic
acid,” said Asma Ishaq, vice president of marketing for Biocell Technology.
“It addresses aging concerns, whether they are joint or skin health, from both
a reparative and preventative perspective.” Glucosamine
is one of the most popular supplements among arthritis
patients, as it inhibits joint space narrowing173 and slows progression of
arthritis, improving symptoms such as pain and stiffness.174Chondroitin
sulfate is the most prevalent GAG in cartilage and, as
a supplement, can limit progression and symptoms of arthritis, including
inhibiting joint space narrowing, reducing pain and improving overall
mobility.175 In the synovium, HA injections have proven effective in managing
pain and stiffness by reducing inflammatory cells in synovial fluid,176 but
research on oral HA is still in early stages.
Chromium is
the kingpin of recent diabetes research. Studies show chromium picolinate
enhances glucose uptake and glycogen synthesis,177 balances glucose levels and
reduces blood lipids,178 and supports glucose control via improved insulin
action, not increased insulin secretion.179 Chromium polynicotinate can improve
insulin sensitivity and control parameters of syndrome X, also known as pre-diabetes.180
Dietary supplements have made substantial progress against
degenerative diseases and related conditions. While each such disease can be
managed with the help of numerous disease-specific compounds, it is important to
note a few supplements can address a broad spectrum of degenerative diseases,
which can share factors such as vascular problems. “Hypertension, stress, elevated cholesterol, and obesity all
undermine the vascular system in the heart, but it is not surprising that they
also negatively affect that same vascular system, which delivers blood to the
brain,” Vagnini said. “It is logical to conclude that those nutrients that
relieve heart disease—antioxidant, fish oils, folic acid—will also be
effective against the onset of dementia and Alzheimer’s.”
Thus, consumers, in general, could benefit from the preventive
and protective actions of EFAs, soy and certain antioxidants, while consumers
who already have or are at a high risk for a particular disease can choose from
an even longer list of targeted supplements.
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