Hoge bloeddruk
Ik ben met dit thema begonnen naar
aanleiding van vragen van klanten.
Ik had een klant die door chlorella een lagere bloeddruk had gekregen
dus dit triggerde mijn interesse in de rol van voeding bij de bloeddruk.
In de natuurgeneeskunde / fytotherapie heb
ik wel gezien dat lijnzaad en
het blad van de maretak de bloeddruk kunnen verlagen. Met name lijnzaad
olie ondersteunt de aanmaak van prostaglandines en deze speelt een gunstige rol bij je
cholestrol en bloeddruk. Ik zal eens in de medische databases snuffelen naar onderzoeken
op dit gebied.
Hoge bloeddruk is weer een goudmijntje voor
de pharmacie, kun je op een natuurlijke manier je hoge bloeddruk verlagen dan heeft dit
natuurlijk de
voorkeur, minder bijwerkingen en goedkoper.
Wel nieuw is dat niet koffie maar juist
cola een rol lijkt te spelen bij
hoge bloeddruk.
Ron
Meidoorn goed voor hoge bloeddruk
bij oa diabetes 2 patiënten
Volgens onderzoekers van de University of
Reading (UK) kunnen bladeren en bloemen van de meidoorn helpen om de bloeddruk van
patiënten met diabetes 2 te verlagen (study in de Juni uitgave van the British Journal of
General Practice (BJGP)).
De meidoorn wordt in Engeland volop
gebruikt door natuurartsen dus wilde de onderzoekers weten of het echt werkte. Het effect
was weliswaar klein maar zeker interessant in combinatie met de effecten door
veranderingen in het dieet. Omdat hoge bloeddruk een typisch Westers probleem is, kan een
veilige natuurlijke benadering altijd de moeite zijn om verder te onderzoeken.
De auteurs zeiden verder dat deze studie
meer bewijs levert van een veilige toepassing van de meidoor, een kruid zonder beperkingen
bij langer gebruik.
http://www.extra.rdg.ac.uk/news/details.asp?ID=662
Druivepit extract kan helpen bloeddruk
te verlagen
Hoge bloeddruk? Een dagelijks druivepit
extract supplement dat rijk is aan polyphenolen kan volgens wetenschappers van de
University of California, helpen uw bloeddruk te verlagen. Dit blijkt uit de eerste
klinische studie naar de werking van dit extract bij mensen die leiden aan het metabool
syndroom (40% vd volwassenen in de States).
Het metabool syndroom is een verzameling van risicofactoren die kunnen leiden tot hart- en
vaatziekten en diabetes type 2. Overgewicht en gebrek aan beweging zijn de belangrijkste
factoren die kunnen leiden tot de verstoringen in het lichaam die het metabool syndroom
wordt genoemd. In Nederland leidt een kwart van de 55 plussers aan dit syndroom, veelal
zonder dit te weten.
http://www.nutraingredients-usa.com/news/
Waarschuwing voor Plavix + Aspirine
bij patiënten met verhoogd risico op hartproblemen door suikerziekte of hoge bloeddruk
Uit onderzoek door de Cleveland Clinic USA
blijkt dat het geneesmiddel Plavix in combinatie met een lage dosis aspirine niet
effectiever is dan alleen goedkope aspirine op zich is voor preventie van hartaanvallen en
dood door hartproblemen bij risicovolle patiënten.
Maar nog verontrustender is het feit dat
uit deze studie blijkt dat patiënten met een verhoogd risico op hartproblemen (diabetici,
hoge bloeddruk) die Plavix nemen in combinatie met aspirine en die nog geen hartaanval
hebben gehad een bijna dubbele kans hebben om te overlijden door hartproblemen hebben.
Verband tussen cola en hoge
bloeddruk
Niet koffie of caffeïne maar cola zorgt
voor hoge bloeddruk blijkt ook dit
recente onderzoek in Amerika.
No linear association between caffeine
consumption and incident hypertension was found. Even though habitual coffee consumption
was not associated with an increased risk of hypertension, consumption of sugared or diet
cola was associated with it. Further research to elucidate the role of cola beverages in
hypertension is warranted.
Bron: http://jama.ama-assn.org/cgi/content/short/294/18/2330
Dalende bloeddruk niet door
medicijnen volgens experts
Experts van de universiteit van Dundee (UK)
concluderen dat niet medicijnen er voor hebben gezorgd dat de bloeddruk bij de Engelse
bevolking is gedaald tussen 1980 en 2000. De bloeddruk daalt nog steeds in Westerse landen
maar het mechanisme daarachter is nog steeds niet duidelijk.
Meer
Erwten en wei: potentiële bestrijders van
hoge bloeddruk
Hypertensie of hoge bloeddruk vormt een
belangrijke risicofactor voor de ontwikkeling van hart- en vaatziekten, die in de Westerse
wereld de voornaamste doodsoorzaak zijn. Naar schatting lijdt 1 op 5 volwassenen in de
wereld aan een hoge bloeddruk. Traditioneel wordt deze kwaal tegengegaan door
antihypertensieve geneesmiddelen toe te dienen en door de voedingsgewoonten en levensstijl
aan te passen. ACE (angiotensin I converting enzyme) speelt een belangrijke rol bij het op
peil houden van de bloeddruk. ACE is een enzym, een eiwit dat bepaalde chemische reacties,
zoals omzetting en afbraak van componenten, doet versnellen. In het menselijk lichaam
bewerkstelligt het ACE enzym de vorming van een stof die de aderen vernauwt en zo de
bloeddruk doet stijgen. Blokkering van ACE in het cardiovasculair systeem resulteert dan
ook in een daling van bloeddruk bij hypertensieve patiënten. Synthetische ACE
inhibitoren, die de werking van het ACE enzym lamleggen, zijn dan ook belangrijk in de
bestrijding van hoge bloeddruk in de geneeskunde.
http://www.ugent.be/nl/nieuwsagenda/persberichten/
extra/archief/3-2003/pb3119.htm
Bloeddrukverlagers
(plasmiddelen/beta-blockers) vergroten kans
op diabetes met 20-45%
Bij patiënten met hoge bloeddruk worden
meestal plasmiddelen (Thiazide zoals chloortalidon en hydrochloorthiazide) of
beta-blockers gebruikt. Bij oudere vrouwen nam het risico op diabetes toe met 20%
(Thiazide) en met 32% (Beta-blockers). Thiazide vergrootte de kans op diabetes bij jonge
vrouwen zelfs met 45%. Hoog tijd dus om eens te kijken naar bloeddruk verlaging op een
gezondere manier zoals:
- Stoppen met roken
- Eet veel groente en fruit
- Afvallen als je overgewicht hebt
- Beperk je inname van alcohol tot 1 glas per
dag
- Vermijdt drop en zout in eten
- Beperk je koffie/cola inname (caffeïne
vergroot kans op hoge bloeddruk)
- Ook de volgende geneesmiddelen bevatten
caffeïne: Algostase, Antigrippine, Aspirine Duo, Cephyl, Witte Kruis, Dolviran, Guronsan,
Kranit Nova, Lonarid N, Mann, Optalidon, Perdolan compositum, Saridon
- Zorg bij stress voor voldoende ontspanning
- Eet meer vegetarische produkten (*)
(*) Rouse IL, Beilin LJ. Editorial
review: vegetarian diet and blood pressure. J Hypertension 1984;2:231-40. // Lindahl O,
Lindwall L, Spangberg A, Stenram A, Ockerman PA. A vegan regimen with reduced medication
in the treatment of hypertension. Br J Nutr 1984;52:11-20.
De “American Heart Association”
verwijst naar de principes van de DASH-voeding waarin onder andere de nadruk gelegd op het
gebruik van veel groenten (300 g) en fruit (2 tot 3 stuks) en 2 tot 4 porties magere
zuivelproducten per dag.
Algae oil 'can lower blood
pressure'
Small amounts of omega-3 derived from algae
can help lower blood pressure, according to research out today.
http://www.dailymail.co.uk/pages/live/articles/health/dietfitness.html?
in_article_id=444707&in_page_id=1798
Higher intake of vegetable protein
associated with lower blood pressure levels
People who eat more protein from vegetables
tend to have lower blood pressure, according to a new study in the January 9 issue of
Archives of Internal Medicine, one of the JAMA/Archives journals.
Most adults have either high blood pressure (hypertension) or prehypertensive blood
pressure levels, according to background information in the article. Previous studies have
found evidence that meat eaters generally have higher blood pressure than vegetarians.
Other research looked directly at the effect of high overall protein intake and found that
people with higher total protein intake are likely to have lower blood pressure, the
authors report.
Paul Elliott, M.B., Ph.D., from Imperial
College London, and colleagues analyzed data from the INTERMAP study, which included 4,680
people (2,359 men and 2,321 women) aged 40 to 59 years from four countries. They measured
each participant's systolic and diastolic blood pressure eight times at four visits in a
three- to six-week period. Each person wrote down everything they had eaten and drank
during the previous 24 hours, including dietary supplements, at each visit. Urine samples
were also taken on the first and third examinations.
Judging by their food records and urine
samples, those who ate more vegetable protein were more likely to have lower blood
pressure than those who ate less vegetable protein. Though the researchers noted a slight
association between animal protein and high blood pressure, this link disappeared when
they accounted for participants' height and weight. There was no link between total
protein intake and blood pressure, in contrast to previous studies.
The researchers are unsure exactly how
vegetable proteins might affect blood pressure, but note from their data that amino acids
may play a role. Some of these building blocks of protein have been shown to influence
blood pressure, and different amino acids were present in diets high in vegetable protein
than in those that contained more animal protein. Other dietary components of vegetables,
such as magnesium, also may interact with amino acids to lower blood pressure.
"Our results are consistent with
current recommendations that a diet high in vegetable products be part of a healthy
lifestyle for prevention of high blood pressure and related chronic diseases," the
authors write. "Definitive ascertainment of a causal relationship between vegetable
protein intake and blood pressure awaits further data from randomized controlled trials,
especially regarding the effect of constituent amino acids on blood pressure."
Diuretics and beta-blockers, used
to treat hypertension, are associated with an increased risk of developing type 2
diabetes, new findings indicate.
The risk of developing diabetes in subjects
taking thiazide-type diuretics compared with those not taking a thiazide was increased by
20 percent in older women, 45 percent in younger women, and 36 percent in men, after
taking account of age, weight, physical activity, and other risk factors. Compared to
patients not taking a beta-blocker, older women taking beta-blockers had a 32 percent
higher risk of diabetes, while for men the risk was 20 percent higher.
http://www.iol.co.za/index.php?set_id=14&click_id=117&
art_id=qw1148060521152B243
We found that thiazide diuretic use was
independently associated with an increased risk of type 2 diabetes in three
distinct cohorts. The use of ß-blockers also was independently associated
with increased risk in older women and men. Although we did not ascertain the
use of ß-blockers in the cohort of younger women, the use of other
antihypertensives, a category presumably including ß-blockers, was associated
with increased risk. The use of calcium channel blockers and ACE
inhibitors was not associated with the development of type 2 diabetes.
http://care.diabetesjournals.org/cgi/content/full/29/5/1065
Increased risk of non-insulin-dependent
diabetes mellitus in elderly hypertensive subjects.
The data presented suggest that the
increased risk of non-insulin-dependent diabetes mellitus in hypertensive subjects taking
beta-blockers or diuretics, or both, is explained at least partly by metabolic
disturbances related to drug therapy.
University of Kuopio, Department of
Medicine, Finland.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&
db=pubmed&list_uids=7706704&dopt=Abstract
Internationaal
Lack of Sleep Linked to Increased Risk
of High Blood Pressure
If you’re middle age and sleep five or less hours a night, you may be increasing your
risk of developing high blood pressure, according to a study released by Columbia
University’s Mailman School of Public Health and the College of Physicians and
Surgeons, and reported in Hypertension: Journal of the American Heart Association.
http://www.cumc.columbia.edu/news/press_releases/
gangwisch_sleep_blood_pressure.html
How nice, brown rice: Study shows rice
bran lowers blood pressure in rats
Thousands of years ago, humans began scrubbing off and discarding the outer layer of
long-grain rice, preferring the polished white kernel beneath. Now, for the first time,
scientists in Japan have shown that this waste product of rice processing, called rice
bran, significantly lowers blood pressure in rats whose hypertension resembles that of
humans
http://acswebapplications.acs.org/applications/ccs/
application/index.cfm?pressreleaseid=2604&categoryid=1
Hormoon leptine speelt rol bij
bloeddruk en overgewicht
Leptin as a common link to obesity and
hypertension.
Department of Internal Medicine,
SUNY-Upstate Medical University and Veterans Affairs Medical Center, Syracuse, New York,
USA.
Leptin is a recently isolated circulating
peptide hormone that is primarily synthesized and secreted by adipocytes. One of the major
functions of this hormone is the control of energy balance by binding to receptors in the
hypothalamus, leading to reduction in food intake, elevation in temperature and energy
expenditure. In addition, increasing evidence suggests that leptin, through both direct
and indirect actions, may play an important role in cardiovascular and renal functions.
While the relevance of endogenous leptin needs further clarification, it appears to be a
potential pressure- and volume-regulating factor, and may function pathophysiologically as
a common link to obesity and hypertension. (c) 2006 Prous Science. All rights reserved.
Source: Timely Top Med Cardiovasc Dis. 2006
Jan 2;10:E1 PMID: 16404481
Plantaardig eiwit (in plaats van
dierlijke eiwitten) zorgt voor een lagere bloeddruk
Vegetable-sourced protein associated with
lower blood pressure
The January 9, 2006 issue of the American
Medical Association journal Archives
of Internal Medicine reported that individuals whose consume more protein from
vegetables have lower blood pressure than those whose consume more protein from animal
sources. The majority of adults have either hypertension or prehypertension.
Previous research has revealed that nonvegetarians tend to have higher blood pressure than
those who don't eat meat.
http://www.lef.org/whatshot/index.html#vspa
Soja studie kan mogelijk link
leggen naar lagere bloeddruk
Soy study may show link to lower blood
pressure
The medicinal benefits of soybeans may
finally be explained in on ongoing study at Baylor College of Medicine in Houston.
Funded by the National Institutes of
Health, the study is investigating the effect of chemicals in the soy plant, isoflavones,
in reducing hypertension in menopausal women. Another two-year study is examining the
effect of these same soy isoflavones on osteoporosis in menopausal women.
"There doesn't appear to be any
downside to soy," said Dr. Addison Taylor, professor of medicine at BCM. "We
should have some idea at the end of the study on how much soy isoflavones lower blood
pressure and also on the ways in which this effect occurs."
BCM researchers are particularly interested
in isoflavones that are part of a group of chemicals called phytoestrogens, which are
abundant in soy plants, because they may lower blood pressure. Taylor and his colleagues
are examining the effect of isoflavones on the production of nitric oxide, a substance
made by blood vessels that reduces the tendency of blood to clot.
The six-week trial will administer enriched
isoflavones to patients, who will undergo monitoring of blood pressure for an entire
24-hour period. Patients will be equipped with an automatic device that will measure blood
flow using an elastic armband filled with mercury.
"It will give us a better idea as to
whether this beneficial effect persists through the whole 24 hours or is confined to just
certain parts of the day or night," said Taylor, a co-investigator of the study
headed by Dr. William Wong, professor of pediatrics at BCM and researcher at the
Children's Nutrition Research Center. "It will also allow us to determine what role
nitric oxide production is playing."
Isoflavone has long been believed by some
members of the scientific community to ward off health problems associated with aging,
such as hot flashes in menopausal women; but limited empirical data have prevented
physicians from recommending its use. However, concerns about conventional estrogen
replacement therapy, based on its connection to an increased risk of breast cancer, have
compelled many women to consider "natural" alternatives such as soy.
Taylor anticipates that isoflavone tablets
will be commercially available some day either as a drug or as a food supplement. The
soybean in its natural state does not yield nearly the same medicinal effect that
extracted, enriched concentrations of isoflavone do.
"I would suspect that this will still
be labeled as a food additive but hopefully with better quality control than some of the
other botanical products currently being sold," Taylor said. "The more
information we have, the more we can at least tell the medical community about what to
expect when these agents are used."
Source: Baylor college of medicine
Deep brain stimulation can lower
blood pressure
The possibility of a patient lowering their
blood pressure at the flick of a switch has been raised by research led by Oxford
University, which shows that stimulating parts of the brain with electrodes can change a
patient’s blood pressure.
In a paper published today by Neuroreport,
researchers at Oxford University and Imperial College London report that they have found
the exact area of the brain that controls blood pressure and how to make use of it.
A team of neurosurgeons and physiologists
have found that they can make patients’ blood pressure increase or decrease by
stimulating with electrodes very specific regions of the brain.
Deep brain stimulation – placing very
thin electrodes onto exact locations in the brain – is already used to relieve pain
or to help Parkinsons’ sufferers to move better. Fifteen patients having the
operation to implant electrodes for pain control agreed to take part in a study to see
whether stimulating another location in the brain could alter blood pressure.
It was found that blood pressure could
indeed be changed, and that it could be raised or lowered very precisely by stimulating
different, very specific parts of the brain. This potentially offers a cure to sufferers
of high blood pressure that does not depend on taking drugs long-term.
As the electrodes can be switched on and
off, another condition that could potentially be treated using this method is
‘postural hypotension’, a condition where a patient’s blood pressure falls
uncontrollably upon standing up.
Mr Alexander Green from Oxford’s
Department of Neurosurgery, lead author of the paper, said: ‘Obviously, as this is
brain surgery, we have to proceed with great caution: it would initially only be warranted
in those patients for whom drug treatments just aren’t working. However, other
research groups are working on less invasive methods of stimulating exact locations in the
brain, for example using nanotechnology, and if this becomes available then the treatment
would be attractive to a much larger number of people.’
Source: Oxford University
