Ai os glifosatos, #69

https://www.noticiasaominuto.com/lifestyle/1201621/o-herbicida-mais-vendido-em-portugal-aumenta-risco-de-linfoma-em-46

Citando:
"investigadores da Icahn School of Medicine em Mount Sinai, Nova Iorque, nos Estados Unidos, revela que há uma ligação entre a exposição ao popular herbicida e o aparecimento de Linfoma não Hodgkin (LNH)."

Implantes mamários e cancro (EUA)?

https://www.foxnews.com/health/fda-alerts-doctors-of-rare-cancer-with-breast-implants

Citando:
" The earliest signs of the disease are usually lumps, swelling and pain around the breasts. Patients will often seek care from their primary physicians, gynecologists or other health practitioners, rather than a plastic surgeon, FDA noted.

"Having everyone informed about this is in the best interest of the patient," said FDA spokeswoman Stephanie Caccomo.

The cancer usually grows slowly and most patients are treated with surgery to remove the implant.

The FDA has been tracking reports of the cancer for years and officially confirmed its link to breast implants in 2017. The latest update comes as health experts around the world attempt to gauge the cancer's frequency and whether extra restrictions are warranted on certain types of breast implants. The FDA is holding a two-day meeting next month on the safety of breast implants."

Estudo sobre sucesso tratamentos alternativos ao cancro

https://sol.sapo.pt/artigo/628808/estudo-diz-que-doentes-oncologicos-que-fazem-tratamentos-alternativos-t-m-uma-maior-taxa-de-mortalidade

Citando:
"De acordo com um estudo da Faculdade de Medicina da universidade de Yale, nos Estados Unidos, os doentes com cancro que optam por fazer tratamentos sem base científica comprovada, têm uma maior taxa de mortalidade.

O estudo analisou 281 casos de pessoas com cancros potencialmente curáveis, como foi o  caso de pessoas com cancro da mama, do pulmão, do colo-rectal e da próstata, ainda em fase inicial, sem que tivessem metástases noutros órgãos."

Carne de frango e antibióticos (nos EUA)

https://sol.sapo.pt/artigo/620034/carne-de-frango-esta-a-ser-afetada-por-uma-epidemia-ha-varias-decadas-

Citando:
"Quem lançou o alerta foi a jornalista norte-americana Maryn McKenna no seu livro intitulado “Plucked! The Truth About Chicken”, que foi publicado há cerca de um ano, sendo que o livro resulta de uma investigação sobre a utilização de antibióticos na indústria agro-alimentar. O estudo diz respeito ao frango que é produzido nos Estados Unidos e no Reino Unido, mas ainda assim o alerta serve para todo o mundo."(...)"O estudo revela que a utilização de antibióticos em demasia na produção de carnes que se destinam ao consumo humano retira as propriedades para combater, de forma eficaz, as bactérias que se tornam “resistentes”."

Os perigos nos cosméticos (EUA, Time.com)

http://time.com/4832688/makeup-shampoo-toxic/

Parasita ataca no Havai

http://edition.cnn.com/2017/04/10/health/hawaii-rat-lungworm-disease-parasite/

Citando:
"Rat lungworm disease, a parasite officially known as Angiostrongylus cantonensis, affects the brain and the spinal cord, according to the Centers for Disease Control and Prevention."

Surdez revertida por terapia de genes (em ratos)

http://www.bbc.com/news/health-38881369
O artigo tem uma foto muito interessante dos defeitos nos pelos envolvidos na audição que estando desordenados tornam as pessoas (neste caso, os ratos) surdas.
Citando:
"Studies, published in Nature Biotechnology, corrected errors that led to the sound-sensing hairs in the ear becoming defective.
The researchers used a synthetic virus to nip in and correct the defect.
"It's unprecedented, this is the first time we've seen this level of hearing restoration," said researcher Dr Jeffrey Holt, from Boston Children's Hospital.
About half of all forms of deafness are due to an error in the instructions for life - DNA.
In the experiments at Boston Children's Hospital and Harvard Medical School, the mice had a genetic disorder called Usher syndrome.
It means there are inaccurate instructions for building microscopic hairs inside the ear.
In healthy ears, sets of outer hair cells magnify sound waves and inner hair cells then convert sounds to electrical signals that go to the brain.
The hairs normally form these neat V-shaped rows."
(...)
"There are about 100 different types of genetic defect that can cause hearing loss. A different therapy would be needed for each one.
Dr Holt told the BBC News website: "We've really gotten a good understanding of the basic science, of the biology of the inner ear, and now we're at the point of being able to translate that knowledge and apply it to human patients in the very near future."
One of the big questions will be whether the synthetic virus is safe.
It was based on adeno-associated virus, which has already been used in other forms of gene therapy.
The researchers also want to prove the effect is long-lasting - they know it works for at least six months.
There are also questions about the "window of opportunity". While the therapy worked in mice treated at birth, it failed when given just 10 days later.'

Sobre o Sodium Benzoate (E211, Benzoato de Sódio)

Sobre o E211 que me apareceu como conservante nuns insuspeitos pickles de manga picantes indianos (bem salgados por sinal):
https://en.m.wikipedia.org/wiki/Sodium_benzoate
Referências finais interessantes: (como funciona como conservante - alterando a alcalinidade) e interacções com outros ingredientes (Vitamina C ou E300 e outros), formação de benzeno (potencialmente cancerígeno) e a remoção generalizada de bebidas.


Citando:
"[Mecanismo de preservação] The mechanism starts with the absorption of benzoic acid into the cell. If the intracellular pH falls to 5 or lower, the anaerobic fermentation of glucose through phosphofructokinase decreases sharply, which inhibits the growth and survival of microorganisms that cause food spoilage."
(...)
"A paper published in the March 2015 Journal of the Science of Food and Agriculture found that sodium benzoate has been replaced by potassium sorbate in the majority of soft drinks in the United Kingdom to avoid the use of anything the consumer might consider an additive, particularly in connection with colours and preservatives.


Association with benzene in soft drinks:
In combination with ascorbic acid (vitamin C, E300), sodium benzoate and potassium benzoate may form benzene, a known carcinogen. When tested by the FDA, most beverages that contained both ascorbic acid and benzoate had benzene levels that were below those considered dangerous for consumption by the World Health Organization (5 ppb).
Most of the beverages that tested higher have been reformulated and subsequently tested below the safety limit.
Heat, light and shelf life can increase the rate at which benzene is formed."


Fonte: Wikipedia (e cada uma das frases tem citação disponível no artigo original, editado por brevidade).
Actualizado: 2017-01-31 com detalhes do mec.pres. e benzeno.

Os surpreendentes usos do Botox (toxina)

Os surpreendentes usos do Botox (toxina) alguns aprovados pela FDA (EUA):
http://time.com/4501839/botox-inection-wrinkles-migraine-depression/?xid=newsletter-brief

Circuncisão e relação com DST (SIDA), cancro e fertilidade

Circuncisão reduz prevalência de SIDA (Guiné Bissau):
http://expresso.sapo.pt/sociedade/2016-12-11-O-que-e-que-a--falta-de--circuncisao-e-soldados-portugueses-tem-a-ver-com-a-propagacao-do-VIH


E em 3 estudos nos EUA:
http://www.meionorte.com/noticias/circuncisao-masculina-reduz-risco-de-cancer-e-aumenta-a-fertilidade-288152
Citando:
"2- A cirurgia pode reduzir o risco de DSTs
A circuncisão evita a propagação de doenças sexualmente transmissíveis virais, incluindo HIV, herpes e HPV – este sendo conhecido por causar verrugas genitais e câncer cervical. “Os dados são indiscutíveis, eles vêm de três ensaios patrocinados pelo governo dos Estados Unidos realizados em três locais diferentes. Os cientistas ainda estão trabalhando para determinar o quanto a circuncisão é capaz de reduzir a disseminação dessas infecções virais”, disse Turek. No entanto, ele diz que a teoria é que o prepúcio atue como um reservatório de secreção, contendo os vírus, tais como HIV e herpes."

Invenção americana para preservar (algum) cabelo durante quimioterapia

A irei é reduzir a circulação nas zonas dos folículos (e como tal, a exposição ao medicamento que destrói as células dos folículos capilares):
http://cdanews.com/2016/12/cooling-caps-protect-cancer-patients-hair-during-chemotherapy/


Citando:
"With the caps, reports Tech Times, the scalp is cooled to 66 degrees Farenheit, therefore constricting blood vessels and blood flow. With less blood reaching the scalp, chemotherapy treatment is halted from having its full effect and therefore less hair follicles will be damaged.
ChemoColdCaps™ is the United States’ first all-inclusive company (...)"

O que acontece quando não se dorme o suficiente - Estudo EUA

Efeitos na saúde, capacidade de aprendizagem e até na produtividade (economia):
http://time.com/4586015/sleep-economy-tired/?xid=newsletter-brief

Leite magro faz crianças mais... gordas

http://www.cbc.ca/news/health/milk-fat-kids-1.3853270


Mais um exemplo de contra-senso:




Citando:
"If you don't get fat from someplace, then you take energy from somewhere else, and it may be that children who are receiving reduced fat milk seek foods that are higher in caloric density, and maybe that's why they're a bit bigger," Maguire said in an interview."
(...)
"Childhood obesity in North America has tripled in the past 30 years. At the same time, children's consumption of whole cow's milk has halved over the same period.
Current guidelines from Health Canada and the American Academy of Pediatrics recommend two servings of low fat milk (one per cent or two per cent) milk for children over the age of two to reduce the risk of childhood obesity."

Dieta rica em proteínas em mulheres depois da menopausa associado a problemas cardíacos

http://edition.cnn.com/2016/11/14/health/high-protein-meat-diet-women-heart-failure/
Citando:
"Women older than 50 who eat high-protein diets could have a greater risk of heart failure, especially if a lot of their protein comes from meat, according to a new study presented at the annual scientific conference of the American Heart Association."

Snacks saudáveis para "aguentar" até à próxima refeição - Time.com

http://time.com/4433139/healthy-snack-ideas-that-fill-you-up/?xid=newsletter-brief

Ai o fio dental!

Os americanos deixaram de o recomendar. Por cá a recomendação é... Cautela, not so fast (mas em Português):
http://expresso.sapo.pt/sociedade/2016-08-04-Calma-ainda-e-cedo-para-deitar-o-fio-dentario-ao-lixo

Sobre o Ómega 3

As evidências dos benefícios são moderadas (existindo diversos estudos ainda em curso). Detalhes adicionais (site nos EUA, em EN):

• PDF: https://nccih.nih.gov/sites/nccam.nih.gov/files/Omega-3_11-30-2015.pdf
• Sobre os ácidos gordos Ómega 3: https://nccih.nih.gov/health/omega3
• Sobre o suplementos de Ómega 3: https://nccih.nih.gov/health/omega3/introduction.htm

Pesticidas, plásticos e outras substâncias químicas que afectam crianças (desde a gravidez)

http://www.independent.co.uk/news/science/toxic-chemicals-poison-warning-food-plastic-air-study-a7114226.html


Citando:
"(...) pregnant women had been found to be contaminated with dozens of potentially harmful substances such as organophosphate pesticides, PBDE flame retardants and phthalates found in plastic. "
(...)
“When the [US] federal government banned some uses of OP [organo-phosphate] pesticides, manufacturers responded by expanding the use of neonicotinoid and pyrethroid pesticides,” the paper said.
“Evidence is emerging that these widely used classes of pesticides pose a threat to the developing brain.
“When the US government reached a voluntary agreement with flame retardant manufacturers to stop making PBDEs, the manufacturers substituted other halogenated and organophosphate flame retardant chemicals.
“Many of these replacement flame retardants are similar in structure to other neurotoxic chemicals but have not undergone adequate assessment of their effects on developing brains.
“When the federal government banned some phthalates in children’s products, the chemical industry responded by replacing the banned chemicals with structurally similar new phthalates. These replacements are now under investigation for disrupting the endocrine system.”

Os números chocantes da saúde nos EUA

https://www.washingtonpost.com/news/wonk/wp/2013/03/26/21-graphs-that-show-americas-health-care-prices-are-ludicrous/?tid=pm_business_pop_b

Superbugs a chegar aos EUA (Colistin)

Mais uma notícia:


Citando:
"The mcr-1 gene makes bacteria resistant to colistin, an antibiotic used to treat multi-drug-resistant infections, including carbapenem-resistant Enterobacteriaceae or CRE, which US health officials have dubbed a 'nightmare' bacteria.
Colistin is the last antibiotic used to combat bacteria that are resistant to the strongest antibiotics."