Silicium is één van de belangrijkste
mineralen. Een tekort beinvloedt onze gehele bindweefsel-structuur. Het bindweefsel is het
fundament van het beendergestel, de bloedvaten, de spieren en de huid. Verder heeft
silicium een belangrijke invloed op het herstellende vermogen van ons lichaam en
ondersteunt het ons afweersysteem. Silicium komt normaal gesproken in grote hoeveelheden
in de natuur voor maar door overbemesting, roofbouw zure regen wordt dit snel minder.
Het menselijk bloed bevat bijna 10mg
silicium per liter (een tiende van calcium). Het lichaam bevat ongeveer 7gr silicium, meer
dan ijzer (3 tot 3,5gr), veel meer dan koper (100 tot 150mg), en nog meer dan kobalt,
nikkel, zink, etc.
Wordt ook bij thermale kuren gebruikt
voor:
- Huidaandoeningen
- Arteriosclerose
- Artritis, jicht en artrose
- Galsteenvorming
- Obesitas, cellulitis, voedselvergiftiging
- Verjongings- en schoonheidskuren
Silicium komt oa voor in:
Asperges
Kool
Komkommer
Sla
Olijven
Radijs
Witte Ui
Hele granen en zilvervliesrijst
Ron
Silicium - goed voor het
kraakbeen
Silicium ofwel kiezelzuur is
voor het menselijk lichaam een belangrijke voedingsstof. Het menselijk lichaam bevat 7
gram silicium. Ter vergelijking: het lichaam bevat 3 tot 3,5 gram ijzer en 100 tot 150 mg
koper. Silicium komt vooral voor in de beenderen, de huid, de aderwanden, de milt, de
pezen, de spieren, de bijnieren, de pancreas, de lever, de nieren, het hart, de
schildklier en de thymus. De belangrijkste voedingsmiddelen waarin silicium voorkomt zijn
de volkoren graanproducten (met uitzondering van maïs), champignons en de schil van
vruchten. Doordat de moderne voeding sterk geraffineerd is, bevat onze voeding
tegenwoordig te weinig kiezelzuur. Bovendien vermindert de hoeveelheid silicium in het
lichaam bij het ouder worden.
Bron: http://www.cruydhof.nl
Silicium in bier bestrijdt
osteoporose
Heel wat onderzoek wordt
verricht naar een mogelijk verband tussen bierverbruik en beenderdichtheid, met aandacht
voor de mogelijke rol van silicium in het bier. Silicium kan de vorming van beenderen en
van kraakbeen beïnvloeden. Deze hypothese steunt op de vaststelling bij dierexperimenten
dat een silicium-arm dieet de groei en ontwikkeling van het beendergestel belemmert.
Experimenteel onderzoek om het verband te vinden tussen silicium in de voeding en
verhoogde beenderdichtheid is nog onvoldoende gevorderd om er definitieve conclusies uit
te trekken, maar de eerste resultaten zijn beloftevol. Zo heeft men vastgesteld dat bij
vrouwen na de menopauze die lijden aan osteoporose, met behulp van een silicium supplement
in hun voeding, hun verlies aan beenderdichtheid zien verminderen en zelfs omkeren.
Bron: http://www.bierengezondheid.be
Silicium: het vergeten
oligo-element
Waarom wordt silicium zo weinig in de
geneeswijzen gebruikt?
- Silicium komt in de natuurlijke omgeving
voornamelijk in niet-oplosbare vorm voor en wordt dus moeilijk opgenomen. Aan de andere
kant is silicium, zelfs in oplosbare vorm, weinig stabiel: het polimeriseert zeer vlug.
Het lichaam vindt bijgevolg moeilijk op natuurlijke wijze het silicium dat nodig is voor
zijn metabolisme. Het is dus niet zozeer de hoeveelheid silicium die we opnemen die van
belang is, maar eerder de manier waarop we het opnemen.
- Het onderricht in de faculteiten
geneeskunde, farmacie of biologische wetenschappen richt zich op min of meer verwante
onderwerpen (silicose, collagenose, asbestose, siliconegels voor de cosmetica, colloïdaal
siliciumdioxide als vulstof) maar niet op biologisch silicium op zich, en het algemeen
onderzoek naar dit onderwerp werd lang verwaarloosd.
Het belang van supplementen
- Silicium, in natuurlijke vorm, zoals we ze
terugvinden in de natuur, kan praktisch niet opgenomen worden door het lichaam
- Tot op heden waren de vormen van silicium
die in de geneeswijzen werden gebruikt moeilijk opneembaar
- het is bewezen dat silicium een essentieel
element is voor ons lichaam (collageen en elastine)
- Onze moderne voeding is te verfijnd, wat
maakt dat natuurlijk silicium haast verdwenen is uit onze voedingsmiddelen
- Bovendien vermindert de hoeveelheid
silicium in ons lichaam onverbiddelijk naargelang de leeftijd
- Tot op heden kon er geen voorraad aan
“mobiliseerbaar” silicium in ons lichaam aangetoond worden; het siliciumgehalte
van het bloed hangt dus af van voedingssupplementen en meer bepaald van ons vermogen
silicium op te nemen.
Bron: http://www.dexsil-labs.com/
Internationaal
Scientists have determined that silicon
helps with the growth and maintenance of skin, hair, ligaments, tendons, and bones as well
as in the development of normal skeletal growth.
Silicon is found in whole, unprocessed
foods. Since most people eat a lot of processed foods, supplementing silicon may be
helpful in maintaining a healthy diet. Like boron, additional research needs to be
conducted in order to determine a recommended daily amount of silicon. In the meantime,
experts suggest 25mg to 50mg a day for the treatment and prevention of osteoporosis.
Food sources that contain silicon
include:
· Asparagus
· Cabbage
· Cucumbers
· Dandelion greens
· Lettuce
· Mustard greens
· Olives
· Parsnips
· Radishes
· White onions
· Whole grains (rice and oats)
Bron: http://www.spineuniverse.com
Silicon may boost calcium/vitamin
D bone benefits
New research adds to mounting evidence
that silicon delivered as choline-stabilised orthosilicic acid (ch-OSAT) may boost the
ability of calcium and vitamin D to build bone mineral density (BMD) in osteoporosis and
osteopenia sufferers.
The latest study, led by Professor Tim
Spector of St Thomas Hospital in London, UK, builds on an earlier investigation indicating
that the benefits of ch-OSA in helping build and maintain bone lie in its regulation of
bone mineralization, which help trigger the deposition of calcium and phosphate, reducing
the number of bone-destroying cells (called osteoclasts) and increasing the number of
bone-building cells (osteoblasts).
Bron: http://www.nutraingredients-usa.com
Silica in drinking water may
reduce the risk of developing Alzheimer in elderly women.
Cognitive impairment and composition of
drinking water in women: findings of the EPIDOS Study1,2,3
Sophie Gillette-Guyonnet, Sandrine
Andrieu, Fatemeh Nourhashemi, Viviane de La Guéronnière, Hélène Grandjean and Bruno
Vellas
1 From the Service de Médecine Interne et Gérontologie Clinique, Hôpital Casselardit,
Toulouse, France (SG-G, FN, HG, and BV); the Unité Inserm 558, Toulouse, France (SG-G,
SA, FN, and BV); and the Groupe Danone, Bourg la Reine, France (VdlG).
The concentration of aluminum or silica in drinking water may be a potential environmental
risk factor for Alzheimer disease (AD).
Objectives: The objective was to
investigate at baseline the potential association between the composition of drinking
water and the level of cognitive function in women taking part in the Epidemiology of
Osteoporosis (EPIDOS) Study and to determine during follow-up the effects of the
composition of drinking water on the risk of AD.
Results: A low silica concentration was
associated with low cognitive performance at baseline. Compared with the nondemented
subjects, the women with a diagnosis of AD during follow-up were older at inclusion, had a
lower financial status and educational level, had a poorer perception of their own health,
and had a more difficult time performing activities of daily living. A multivariate
analysis including potential confounding factors showed that women with AD appeared to
have been exposed to lower amounts of silica at baseline.
Conclusions: Silica in drinking water may
reduce the risk of developing AD in elderly women. The results corroborate those of
another epidemiologic study carried out in France. The potential effect of silica needs to
be confirmed in additional investigations.
American Journal of Clinical Nutrition (2005;81:897–902)
Effect of silicon supplement on
osteopenia induced by ovariectomy in rats.
Rico H, Gallego-Lago JL, Hernandez ER,
Villa LF, Sanchez-Atrio A, Seco C, Gervas JJ.
Departamento de Medicina, Universidad de
Alcala, 28801, Madrid, Spain.
The effect of silicon (Si) supplement on
preventing bone mass loss induced by ovariectomy (OVX) in rats was investigated. Three
groups of 15, 100-day-old female Wistar rats each, with a mean initial weight of
approximately 260 g per animal, were selected for the present study. One of the
experimental group consisting of 15 OVX rats was fed a diet supplemented with 500 mg of Si
per kg of feed (Si + OVX). The other two groups consisting of 15 OVX and 15 sham-OVX rats
did not receive these supplements. Morphometric (weight and length) and densitometric
studies with dual-energy X-ray absorptiometry were performed on the whole femur and 5th
lumbar vertebra of each animal 30 days after the experiment. The Si + OVX rats did not
show a loss of bone mass induced by OVX at axial level (5th lumbar vertebra) or periphery
(femur). Nonetheless, a significant increase (ANOVA with Bonferroni/Dunn post hocs test)
of longitudinal development of the femur (P < 0.0001) was patent. These results,
obtained through the measurements of axial and peripheral bones, warrant closer scrutiny
in connection with the Si inhibitory effect on bone mass loss as well as the stimulatory
effect on bone formation.
Both actions, namely, inhibition of
resorption and stimulation of formation, infer that Si may have a potential therapeutic
application in the treatment of involutive osteoporosis.
Calcif Tissue Int. 2000 Jan;66(1):53-5
Dietary silicon intake is
positively associated with bone mineral density in men and premenopausal women of the
Framingham Offspring cohort.
Jugdaohsingh R, Tucker KL, Qiao N,
Cupples LA, Kiel DP, Powell JJ.
Gastrointestinal Laboratory, The Rayne
Institute, St Thomas' Hospital, London, United Kingdom. ravin.jugdaohsingh@kcl.ac.uk
The role of dietary silicon in bone
health in humans is not known. In a cross-sectional, population-based study (2847
participants), associations between dietary silicon intake and BMD were investigated.
Dietary silicon correlated positively and significantly with BMD at all hip sites in men
and premenopausal women, but not in postmenopausal women, suggesting that increased
silicon intake is associated with increased cortical BMD in these populations.
INTRODUCTION: Osteoporosis is a
burgeoning health and economic issue. Agents that promote bone formation are widely
sought. Animal and cellular data suggest that the orthosilicate anion (i.e., dietary
silicon) is involved in bone formation. The intake of silicon (Si, approximately 30
mg/day) is among the highest for trace elements in humans, but its contribution to bone
health is not known.
MATERIALS AND METHODS: In a
cross-sectional, population-based study, we examined the association between silicon
intake and bone mineral density (BMD) in 1251 men and 1596 pre- and postmenopausal women
in the Framingham Offspring cohort (age, 30-87 years) at four hip sites and lumbar spine,
adjusting for all potential confounding factors known to influence BMD and nutrient
intake. RESULTS: Silicon intake correlated positively with adjusted BMD at four hip sites
in men and premenopausal women, but not in postmenopausal women. No significant
association was observed at the lumbar spine in any group. Categorical analysis by Si
intake, or energy-adjusted Si intake, supported these findings, and showed large
differences in BMD (up to 10%) between the highest (> 40 mg Si/day) and lowest (< 14
mg Si/day) quintiles of silicon intake. A significant association at the lumbar spine in
men was also observed. Further analyses indicated that some of the effects seen for
moderate consumption of alcoholic beverages on BMD might be attributed to Si intake.
CONCLUSIONS: These findings suggest that higher
dietary silicon intake in men and younger women may have salutary effects on skeletal
health, especially cortical bone health, that has not been previously recognized.
Confirmation of these results is being sought in a longitudinal study and by assessment of
the influence of silicon intake on bone markers in this cohort.
PMID: 14969400
J Bone Miner Res. 2004 Feb;19(2):297-307.
Epub 2003 Dec 16
Effects of silicon, fluoride,
etidronate and magnesium on bone mineral density: a retrospective study.
Eisinger J, Clairet D. Centre Hospitalier
de Toulon, France.
A retrospective study of bone mineral
density (BMD) changes was performed in 53 osteoporotic women prior to carrying out a
prospective study. Comparisons between BMD of controls (n = 16) and treated groups over a
14-22 month period showed that fluoride (n = 10) induced a significant (P < 0.05)
increase in vertebral and a slight decrease in femoral BMD, whereas silicon (n =
8) induced a significant (P < 0.05) increase in femoral BMD. Etidronate (n =
13) and, to a lesser extent, magnesium (n = 6), induced a slight although statistically
non-significant increase in vertebral BMD.
PMID: 8292498
Magnes Res. 1993 Sep;6(3):247-9
Silicon, bone tissue and immunity
Schiano A, Eisinger F, Detolle P,
Laponche AM, Brisou B, Eisinger J.
The authors study the activity of a
soluble salt of silicium on the evolution of the trabecular bone volume (TBV). They note a
significant increase in the TBV, both in drinkable and in injectable form, in relation to
a control population not receiving osteotrope medication. They moreover note, in a
series of patients treated with silicium compared to a control group, a net increase in
circulating lymphocytes and immunoglobulins (especially IgG).
Rev Rhum Mal Osteoartic. 1979
Jul-Sep;46(7-9):483-6
PMID: 504950
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