Breaking News
February 17, 2019 - Sinks by Toilets in ICU Patient Rooms Harbor Harmful Bacteria
February 17, 2019 - Cancer cells’ plasticity makes them harder to stop
February 17, 2019 - Young cannabis users have increased risk of depression and suicidal behavior
February 17, 2019 - Tasmanian Devils Likely to Survive Cancer Scourge
February 17, 2019 - Neoadjuvant PD-1 blockade seems effective in glioblastoma
February 17, 2019 - Personal, social factors play role in enabling sustainable return to work after ill health
February 17, 2019 - Mouse studies show ‘inhibition’ theory of autism wrong
February 17, 2019 - Study shows how neuroactive steroids inhibit activity of pro-inflammatory proteins
February 17, 2019 - Use of liver grafts from older donors decreased despite better outcomes in recipients
February 17, 2019 - MUSC researchers discover new mechanism for a class of anti-cancer drugs
February 17, 2019 - HPV misconceptions are causing women to miss smear tests
February 17, 2019 - Sanofi and Regeneron Offer Praluent (alirocumab) at a New Reduced U.S. List Price
February 17, 2019 - Researchers say auditory testing can identify children for autism screening
February 17, 2019 - New method analyzes how single biological cells react to stressful situations
February 17, 2019 - WVU gynecologic oncologist investigates novel treatment for cervical and vaginal cancers
February 17, 2019 - ADHD diagnoses poorly documented
February 17, 2019 - Majority of gender minority youth do not identify with traditional sexual identity labels
February 17, 2019 - AbbVie, Teneobio enter into strategic transaction to develop potential treatment for multiple myeloma
February 17, 2019 - Lower Birth Weight May Up Risk for Psychiatric Disorders
February 17, 2019 - Scientists identify reversible molecular defect underlying rheumatoid arthritis
February 17, 2019 - Moffitt researchers shed light on how CAR T cells function mechanistically
February 16, 2019 - Female Anatomy May Play Big Role in Sperm’s Success
February 16, 2019 - BMI may mediate inverse link between fiber intake, knee OA
February 16, 2019 - Movement impairments in autism can be reversed through behavioral training
February 16, 2019 - Studies address racial disparities in postpartum period and cardiovascular health
February 16, 2019 - Scientists implicate hidden genes in the severity of autism symptoms
February 16, 2019 - Decreased deep sleep linked to early signs of Alzheimer’s disease
February 16, 2019 - Neuroscientists show how the brain responds to texture
February 16, 2019 - Gilead Announces Topline Data From Phase 3 STELLAR-4 Study of Selonsertib in Compensated Cirrhosis (F4) Due to Nonalcoholic Steatohepatitis (NASH)
February 16, 2019 - What Can I Do About Sweating? (for Teens)
February 16, 2019 - Companies navigate dementia conversations with older workers
February 16, 2019 - Newly developed stem cell technologies show promise for treating PD patients
February 16, 2019 - Collaborative material research could advance self-assembling nanomaterials
February 16, 2019 - Researchers take major step in creating technology that mimics the human brain
February 16, 2019 - Erasing memories associated with cocaine use reduces drug seeking behavior
February 16, 2019 - Artificial intelligence can accurately predict prognosis of ovarian cancer patients
February 16, 2019 - Racial disparities in cancer deaths on the decline for America
February 16, 2019 - FDA authorizes new interoperable insulin pump for children, adults with diabetes
February 16, 2019 - Coexisting Medical Conditions, Smoking Explain PTSD-CVD Link
February 16, 2019 - Skin Cancer Screening: MedlinePlus Lab Test Information
February 16, 2019 - ‘Happiness’ exercises can boost mood in those recovering from substance use disorder
February 16, 2019 - Cell manipulation could soon halt or reverse aging
February 16, 2019 - Pumped Breast Milk Falls Short of Breastfed Version
February 16, 2019 - Men’s porn habits could fuel partners’ eating disorders, study suggests
February 16, 2019 - Rapid progression of age-related diseases may result from formation of vicious cycles
February 16, 2019 - Immune checkpoint molecule protects against future development of cancer
February 16, 2019 - New method produces hydrogels that have properties similar to cells’ environment
February 16, 2019 - $4.1 million funding for heart research on Valentine’s Day
February 16, 2019 - General anesthesia in early infancy unlikely to have lasting effects on developing brains
February 16, 2019 - New breakthroughs for muscular dystrophy research
February 16, 2019 - First Opinion: Embryo editing for higher IQ is a fantasy. Embryo profiling for it is almost here
February 16, 2019 - Vapers develop cancer-related gene deregulation as cigarette smokers
February 16, 2019 - Bringing Antimicrobial Susceptibility Testing (AST) to the Community
February 16, 2019 - Decolonization protocol after hospital discharge can prevent dangerous infections
February 16, 2019 - Children with ASD more likely to face maltreatment, study finds
February 16, 2019 - Study finds genetic vulnerability to use of menthol cigarettes
February 16, 2019 - Promising drug developed to rejuvenate muscle cells
February 16, 2019 - H-RT should be the standard of care for men with low risk prostate cancer, study shows
February 16, 2019 - New technique using patients’ own modified cells could help treat Crohn’s disease
February 16, 2019 - Therapeutic endoscopy has an expanding role in the treatment of IBD
February 16, 2019 - Blood clot discovery could lead to development of better treatments for blood diseases
February 16, 2019 - Intervention can increase exclusive breastfeeding rates
February 16, 2019 - New project explores how gaming technologies can help cancer patients communicate better
February 16, 2019 - Catalyst Biosciences Presents Updated Data from Its Phase 2/3 Trial of Subcutaneous Marzeptacog Alfa (Activated) in Individuals with Hemophilia A or B with Inhibitors at the 12th Annual EAHAD Congress
February 16, 2019 - Rerouting nerves during amputation reduces phantom limb pain before it starts
February 16, 2019 - A Hormone Produced When We Exercise Might Help Fight Alzheimer’s
February 16, 2019 - Millions of British people breathe toxic air travelling to GPs
February 16, 2019 - Conformance of genetic characteristics found to be crucial for longer preservation of kidney graft
February 16, 2019 - Researchers use optogenetic tool to control, visualize receptor signals in neural cells
February 16, 2019 - New reversible antiplatelet therapy could reduce risk of blood clots, prevent cancer metastasis
February 16, 2019 - Testosterone is not the only hormone needed for penis development
February 16, 2019 - FDA Advisory Committee Recommends Approval of Spravato (esketamine) Nasal Spray for Adults with Treatment-Resistant Depression
February 15, 2019 - Heart surgery technology developed at Baptist Health debuts after years of secrecy
February 15, 2019 - Prescription Opioids Double Risk of Triggering Fatal Car Crash
February 15, 2019 - New study helps doctors better understand high blood pressure in pregnant women
February 15, 2019 - Beta wave control in Parkinson’s diseased brain could be a potential therapy
February 15, 2019 - Media representations of love may justify gender-based violence in young people
February 15, 2019 - Yoga May Help With Rheumatoid Arthritis Symptoms, Severity
February 15, 2019 - Obstructive sleep apnea linked to inflammation, organ dysfunction
February 15, 2019 - Master your mind: A challenge from WELL for Life
Must Blood Pressure Rise Wth Age? Remote Tribes Hold Clues

Must Blood Pressure Rise Wth Age? Remote Tribes Hold Clues

image_pdfDownload PDFimage_print

WEDNESDAY, Nov. 14, 2018 — Contrary to common belief, blood pressure doesn’t have to rise as you age, a study of two remote South American tribes suggests.

Looking at the isolated Yanomami tribe in the Venezuelan rainforest, researchers found their blood pressure remained low from youth to age 60.

That’s probably because as hunter-gatherer-gardeners, they don’t eat the processed and salted foods common in the so-called Western diet, the researchers said in a new report.

“The association between age and blood pressure may not be driven by age itself, but rather the cumulative effects of a Western lifestyle and dietary practices,” said lead researcher Noel Mueller, an assistant professor of epidemiology at Johns Hopkins University School of Public Health.

Another local tribe, the Yekwana, had some access to Western-style foods, and their blood pressure started increasing in childhood, said Mueller.

“We believe that rising blood pressure is due to the consumption of processed foods and salt,” he said. This is what the report refers to as “unnatural Western exposures.”

About 1 in 3 American adults has high blood pressure, according to the U.S. National Institutes of Health. Left untreated, high blood pressure, or hypertension, can lead to heart attack, stroke, sexual dysfunction and other health problems.

Dr. Harlan Krumholz, a professor of cardiology at Yale University, was enthusiastic about the new findings.

“This small study introduces a remarkably powerful idea — that an increase in blood pressure with age is not inevitable,” said Krumholz, who wasn’t involved with the study.

It is entirely plausible that a healthy lifestyle could protect against the growing risk of hardening of the arteries with increasing age that is so prevalent in Westernized societies, he said.

Over five months, Mueller and his team measured the blood pressure of 72 Yanomami and 83 Yekwana members who were between 1 and 60 years old.

The Yekwana are less isolated than the Yanomami. Because of missions and an airstrip, the Yekwana have some contact with the outside world, including Western-style eating, the researchers noted.

The study found no age-related increase in blood pressure among the children and adults of the Yanomami. But among the Yekwana, blood pressure began increasing in childhood and went up about 0.25 mm Hg a year on average, Mueller said.

The Yanomami diet consists of fruits, vegetables and meats from the animals they hunt. Fiber and carbohydrates make up the bulk of their diet, however. “No salt and no added sugar,” Mueller said.

Keeping blood pressure low is key to preventing cardiovascular disease, Mueller said, adding that age-related blood pressure spikes shouldn’t be taken for granted.

“We can prevent it with interventions that reduce the intake of salt in our diet,” he said.

Life deep in the isolated rainforest isn’t all rosy, however. Mueller acknowledged that the Yanomami life span is shorter than that in developed countries because they lack access to antibiotics and other medicines that could prevent or cure infections and diseases.

Warring with other tribes also shortens their lives, Mueller said.

The study can’t prove a direct cause-and-effect relationship. Still, “it is worth studying whether the effect of age on our vascular system can be slowed, stopped or even reversed with a healthy lifestyle — and what particular elements of a healthy lifestyle might make the most difference,” Krumholz said.

As to whether salt is to blame for blood pressure rising with age, Krumholz isn’t sure.

“There are so many ways that modern society is different from the era in which cardiac disease was rare,” Krumholz said.

Differences in dietary, behavioral and environmental exposures make it hard to pinpoint the exact cause of these blood pressure discrepancies, he said. “It is likely, in the end, to be a result of the combination of factors,” Krumholz noted.

The report was published online Nov. 14 in JAMA Cardiology.

More information

To learn more about healthy blood pressure, visit the U.S. National Institutes of Health.

© 2018 HealthDay. All rights reserved.

Posted: November 2018

Tagged with:

About author

Related Articles