hoge bloeddruk en voeding


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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 patiŽnten

Volgens onderzoekers van de University of Reading (UK) kunnen bladeren en bloemen van de meidoorn helpen om de bloeddruk van patiŽnten 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 patiŽnten 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 patiŽnten.

Maar nog verontrustender is het feit dat uit deze studie blijkt dat patiŽnten 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 caffeÔne 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: potentiŽle 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 patiŽnten. 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 patiŽnten 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 (caffeÔne vergroot kans op hoge bloeddruk)
  • Ook de volgende geneesmiddelen bevatten caffeÔne: 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 Ŗ-blockers also was independently associated with increased risk in older women and men. Although we did not ascertain the use of Ŗ-blockers in the cohort of younger women, the use of other antihypertensives, a category presumably including Ŗ-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

 

 

 


 


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