Mostrar mensagens com a etiqueta 2018-09. Mostrar todas as mensagens
Mostrar mensagens com a etiqueta 2018-09. Mostrar todas as mensagens

quinta-feira, 12 de setembro de 2019

Porque se ganha peso com a idade...

https://news.google.com/articles/CBMiXmh0dHBzOi8vd3d3Lmh1ZmZwb3N0YnJhc2lsLmNvbS9lbnRyeS9wb3ItcXVlLWVuZ29yZGFtb3MtZW52ZWxoZWNlcl9icl81ZDc5MmY1NGU0YjBhOTM4YTQyY2FmMTXSAWFodHRwczovL20uaHVmZnBvc3RicmFzaWwuY29tL2FtcC9lbnRyeS9wb3ItcXVlLWVuZ29yZGFtb3MtZW52ZWxoZWNlcl9icl81ZDc5MmY1NGU0YjBhOTM4YTQyY2FmMTUv?hl=pt-PT≷=PT&ceid=PT%3Apt-150

Citando:
"Uma nova pesquisa de cientistas da Karolinska Institutet na Suécia responde, em parte, esta questão. Na verdade, a renovação lipídica ― ou seja, renovação das células responsáveis por armazenar gordura ― no tecido adiposo diminui durante o envelhecimento e facilita o ganho de peso, mesmo que a alimentação e os exercícios físicos não mudem com o tempo. O estudo foi publicado na revista Nature Medicine. "

segunda-feira, 1 de outubro de 2018

Vacina reduz cancros agressivos (mutação HER2)

https://www.dailymail.co.uk/news/article-6223117/New-cancer-vaccine-teach-immune-rogue-cells.html

Citando:
"The method involves extracting immune cells from a patient, altering them in the laboratory so they can 'see' a protein common to many cancers called HER2, and then reinjecting the cells.

Because the treatment is developed using the patient's own cells, it tends to be better tolerated and to more precisely target their cancers. 

The trial was small, but for six of the patients, the experimental vaccine was cause for hope.

Tumor growth was stopped in its tracks for four patients with metastatic ovarian, gastroesophageal, prostate and bowel cancers. 

Another patient's tumors shrank for more than four months, before starting to grow again. 

And the vaccine worked so well in one that after nearly two years, she was still cancer-free.

Interestingly, when her cancer did come back, it no longer expressed the HER2 cells. "

Estender a vida versus manter a qualidade de vida? (Cancro)

https://www.foxnews.com/health/preventing-tumor-spread-may-not-improve-quality-of-life

Citando:
"“In cancer patients there are two important things when evaluating a therapy: whether it extends survival and whether it improves quality of life (even if it doesn’t extend survival),” Xie explained.

Although many studies have measured progression-free survival, most have not reported on health-related quality of life. Xie and his colleagues were able to find 38 studies, including a total of 13,979 cancer patients with 12 different cancer types, that did look at both endpoints.


Data pooled from all 38 studies showed no significant association between progression-free survival and quality of life.


The researchers had difficulty comparing data from the studies because quality of life was not always measured in the same way. Xie hopes that in the future, researchers will standardize the way they measure quality of life."


Parasita que come o cérebro?

https://eu.shreveporttimes.com/story/news/2018/10/01/brain-eating-amoeba-naegleria-fowleri-kills-man/1491834002/

Citando:
"Fabrizio "Fab" Stabile, 29, of the Atlantic City-area beach community of Ventnor City died Sept. 21, just one day after he was diagnosed with the brain-eating amoeba, Naegleria fowleri, according to a GoFundMe page that aims to create the Fabrizio Stabile Foundation. Stabile had been at a wave pool at BSR Cable Park's Surf Resort in Waco, Texas, and subsequently suffered from a headache Sept. 16 that progressed to an inability to get out of bed or speak coherently.

He was hospitalized Sept. 17, but doctors at first thought he had bacterial meningitis, which delayed the proper treatment. Only four people have survived the


► Sept. 28: Brain-eating amoeba found in Louisiana water system
► June 2017: Who's to blame for lake's brain-eating amoeba?
► June 2017: Deadly brain-eating amoeba symptoms are difficult to identify


Naegleria fowleri, known as the “brain-eating amoeba,” usually infects people when contaminated water, generally from lakes, rivers or streams, enters the body through the nose, according to the federal Centers for Disease Control and Prevention. 


Once the parasite enters the nose, it travels to the brain where it can cause a fatal infection known as primary amebic meningoencephalitis. Symptoms start to show one to nine days after swimming, and infected people typically die one to 18 days after symptoms start, according to the CDC."


domingo, 23 de setembro de 2018

Estudo da OMS sobre o consumo de álcool

... não trazer benefícios alguns (que contrariamente ao que habitualmente se considera) pode estar avaliado por baixo:
https://gizmodo.com/world-health-organization-study-finds-alcohol-responsib-1829247664

Citando:
"An enormous study recently published in the Lancet concluded that despite a longstanding popular impression (including in the medical community) that moderate alcohol consumption may be good for health, any gains are more than outweighed by the harms. The lead author of that study, Max Griswold, told Gizmodo that “We found that there isn’t really any benefit of drinking to your health... The safest level, from a health perspective, is not drinking at all.”

According to that study, drinking two alcoholic beverages a day increases the risk of premature death by up to seven percent.

(...)

According to the Guardian, Poznyak believes that the WHO study in fact underestimates the harms of drinking because it does not include data on children who begin drinking before the age of 15, which he said is common in “many countries.”"

segunda-feira, 17 de setembro de 2018

Uma aspirina por dia?

Talvez não para idosos. Contraindicado para idosos:
https://www.noticiasaominuto.com/n/1082725/

domingo, 16 de setembro de 2018

Aumentar o consumo de ferro

... (para evitar anemias):

https://lifestyle.sapo.pt/saude/peso-e-nutricao/artigos/os-alimentos-mais-ricos-em-ferro-para-combater-a-anemia

Citando:
"É preciso ter em atenção que existem alguns fatores nutricionais que aumentam ou diminuem absorção do ferro. Por exemplo:

- Evite o consumo de chá verde/preto ou café após as refeições principais (1-2h) porque diminuem a sua absorção.

- Evite o consumo de farelo de trigo cru, juntamente com alimentos que contêm ferro.

Como potenciar a absorção de ferro

A sua absorção é aumentada quando os alimentos ricos em ferro são acompanhados de fontes de vitamina C. A maioria dos legumes e muitas frutas são excelentes fontes de vitamina C.

As principais fontes são os brócolos, couve-galega, couve-de-bruxelas, couve-flor e couves de uma forma geral, pimento, tomate, ervilhas, citrinos(laranja, limão, tangerina, toranja), goiaba, kiwi, uvas, maçã, morango, papaia, manga, melão, etc. Opte, por exemplo, pela ingestão de sumo de citrinos às refeições principais.

O uso de panelas e recipientes de ferro também contribui para aumentar a ingestão de ferro."


sábado, 15 de setembro de 2018

Ferro via alimentação?

http://noticias.r7.com/saude/como-acrescentar-na-alimentacao-o-ferro-de-que-o-corpo-necessita-15092018

Citando:
"A carne vermelha é particularmente rica no tipo de ferro que é fácil de ser absorvido pelo organismo, mas hoje em dia muita gente está reduzindo ou eliminando completamente seu consumo.

Como alternativas, há boas fontes de ferro em verduras folhosas de cor verde-escura, como a couve e o espinafre, e leguminosas, como ervilhas e lentilhas. O problema é que você não absorve tanta quantidade de ferro das fontes vegetais quanto absorve da carne vermelha.


Há ainda o ferro que você pode obter a partir do consumo de pães e cereais matinais fortificados, embora, novamente, nem sempre seja de uma forma muito absorvível.


Para comprovar a existência do ferro nesses alimentos, experimente moer o cereal, adicionar um pouco de água morna e usar um imã para atrair as limalhas de ferro da mistura."


quinta-feira, 13 de setembro de 2018

Plásticos livres de BPA podem ser também prejudiciais

Pelo menos são-o nos ratos. É sobre o efeito toxicológico não linear (uma pequena quantidade pode fazer pior do que uma quantidade maior da substância tóxica):
https://gizmodo.com/study-suggests-bpa-free-plastics-are-just-as-harmful-to-1829033127

Citando:
"Regulatory agencies such as the Food and Drug Administration still maintain that current levels of BPA exposure in food are not a concern to human health, pointing to research showing that people metabolize BPA faster than mice, dulling any possible toxic effects. But Hunt says this assumption has relied on traditional methods of toxicology, which might miss the subtler effects caused by low doses of BPA and similar chemicals.


“You might expect a linear response—the more you give, the worse it is. But these types of chemicals don’t behave that way; they behave like hormones or some drugs we take, where a tiny bit can exert a powerful effect, but bumping the dose up might abolish that effect or induce a new one,” said Hunt. “And yet the FDA doesn’t want to believe there’s a low-dose effect, even though there’s some evidence of that in their data.”"


terça-feira, 11 de setembro de 2018

Molécula anti-envelhecimento com efeito no sistema cardiovascular

https://www.sciencedaily.com/releases/2018/09/180910160626.htm

Citando:
"A molecule produced during fasting or calorie restriction has anti-aging effects on the vascular system, which could reduce the occurrence and severity of human diseases related to blood vessels, such as cardiovascular disease, according to a study led by Georgia State University"

Molécula anti-envelhecimento com efeito no sistema cardiovascular

https://www.sciencedaily.com/releases/2018/09/180910160626.htm

Citando:
"A molecule produced during fasting or calorie restriction has anti-aging effects on the vascular system, which could reduce the occurrence and severity of human diseases related to blood vessels, such as cardiovascular disease, according to a study led by Georgia State University"

sábado, 8 de setembro de 2018

Estudo eficácia secagem das mãos

Os secadores a ar são piores do ponto de vista higiénico do que as toalhas de papel:
https://medicalxpress.com/news/2018-09-jet-air-dryers-hospital-toilets.html

Citando:
"On each day, over 12 weeks, levels of bacterial contamination in the toilets were measured, allowing comparisons to be made when either paper towels or jet-air dryers were in use. Samples were taken from the floors, air and surfaces in each of the toilets.

The main target bacteria were:

Staphylococcus aureus: responsible for a range of conditions from minor skin and wound infections to life-threatening septicaemia.

Enterococci: bacteria that can cause difficult-to-treat infections, including in immunocompromised patients.

Enterobacteria: including Escherichia coli. These bacteria cause a wide range of infections, including gastroenteritis, pneumonia and septicaemia.

Across the three hospitals, bacterial counts were significantly higher in the toilets on the days that jet-air dryers were in use.

In Leeds and Paris, at least five times more bacteria were recovered from the floors when jet-air dryers were in use, compared with paper towels."

Dor e mindfulness?

https://medicalxpress.com/news/2018-09-mindful-people-pain-mri-imaging.html

Citando:
"The default mode network extends from the posterior cingulate cortex to the medial prefrontal cortex of the brain. These two brain regions continuously feed information back and forth. This network is associated with processing feelings of self and mind wandering, Zeidan said.

"As soon as you start performing a task, the connection between these two brain regionsin the default mode network disengages and the brain allocates information and processes to other neural areas," he said.


"Default mode deactivates whenever you are performing any kind of task, such as reading or writing. Default mode network is reactivated whenever the individual stops performing a task and reverts to self-related thoughts, feelings and emotions. The results from our study showed that mindful individuals are seemingly less caught up in the experience of pain, which was associated with lower pain reports.""


Cancro da próstata

A história de Brian Custer:
https://www.menshealth.com/health/a23025236/brian-custer-prostate-cancer/

Citando:
"He says his fitness routine was crucial to his rapid recovery. "My marital arts instructor came over to visit and said, 'You’re a martial artist, you're mentally tougher and physically tougher than anybody. He had me using 2-pound and 5-pound little kettle bells. He said, 'Even if you have to sit on your couch and arm curl these, try to do these little squats with 2 pounders. So that's what I did."

Custer also did Kegel exercises to regain strength in his pelvis and help him fend off incontinence, a common side effect of prostate cancer surgery. He was initially worried that he would experience erectile dysfunction, another common side effect of the procedure, but "my doctor was very honest that he wasn't going to snip any nerves, that he wanted me to have a very happy and healthy sex life," he says."


terça-feira, 4 de setembro de 2018

Estudada a saúde sexual...

https://www.terra.com.br/vida-e-estilo/minha-vida/melhor-que-viagra-azeite-reduz-risco-de-impotencia-em-ate-40-diz-estudo,b46be22300afe6cf6577ef6a665a1458wsx8j5dm.html
Citando:
"O azeite de oliva, além de trazer um sabor delicioso para os alimentos, também pode ajudar a reduzir o risco de disfunção erétil em até 40%, de acordo com um estudo da Universidade de Athenas. A pesquisa descobriu que consumir 9 colheres de sopa de azeite por semana, junto com muitos legumes, frutas, peixe e feijão, aumenta as chances de homens terem uma vida sexual livre de remédios por volta de seus 70 anos. Além do azeite de oliva, eles descobriram que os homens tendem a ser protegidos desse tipo de problema se a dieta contiver cerca de 13 porções de legumes por semana, seis pedaços de frutas, três porções de peixe e duas porções de feijão, seguindo as bases da Dieta Mediterrânea."