January 30, 2017

Health roundup: Growing back teeth, appendix, stem cells, cats + Alzheimers, marijuana studies

End of fillings in sight as scientists find Alzheimer's drug makes teeth grow back

Researchers at King's College London found that the drug Tideglusib stimulates the stem cells contained in the pulp of teeth so that they generate new dentine – the mineralized material under the enamel.....Scientists showed it is possible to soak a small biodegradable sponge with the drug and insert it into a cavity, where it triggers the growth of dentine and repairs the damage within six weeks. The tiny sponges are made out of collagen so they melt away over time, leaving only the repaired tooth.

Appendix Isn't Useless At All: It's A Safe House For Good Bacteria

Long denigrated as vestigial or useless, the appendix now appears to have a reason to be – as a "safe house" for the beneficial bacteria living in the human gut.

Drawing upon a series of observations and experiments, Duke University Medical Center investigators postulate that the beneficial bacteria in the appendix that aid digestion can ride out a bout of diarrhea that completely evacuates the intestines and emerge afterwards to repopulate the gut

Scientists can now grow a beating human heart from stem cells

A team of scientists from Massachusetts General Hospital and Harvard Medical School have used adult skin cells to regenerate functional human heart tissue. The study, published in the journal Circulation Research, detailed that the team took adult skin cells, using a technique called messenger RNA to turn them into pluripotent stem cells, before inducing them to become two different types of cardiac cells.  Then for two weeks they infused the hearts with a nutrient solution, allowing them to develop under the same circumstances a heart would grow inside a human body. After the two week period, the hearts contained well-structured tissue, which appeared similar to that contained in developing human hearts. When shocked with electricity, they started beating.

Could your CAT give you Alzheimer's? Parasite found in feline feces 'increases risk of developing the crippling brain disease'

Scientists claims cats are putting their owners at risk of Alzheimer's.  The focus of investigation is Toxoplasma gondii, a single-cell parasite in cat feces. The parasite has been linked to brain cancer, anxiety and schizophrenia. Now researchers have found the parasite can lead to Alzheimer's disease

About one-third of people worldwide are suspected of having a T. gondii infection, and many more are at risk.  This includes cat owners, who don't wash their hands thoroughly after handling contaminated litter, and pregnant women, who can pass the infection to a child in the womb.  Once infection occurs, the parasite moves to the brain.

When Kale, coconuts, and avocados could be bad for you.

Experts say there’s something metallic lurking in those foods, in our water, and elsewhere that could be making us feel miserable. Anxiety, trouble focusing, exhaustion, and an all around mental funk are familiar symptoms for a lot of people....After some investigation Dr. Kogan — an internist — said she found that copper is increasingly the culprit. “These are wonderful things to have as part of our diet, but if somebody is consuming excess they could certainly be at risk,” she said.  At risk for a condition known as ‘copper toxicity.’  “If you had six cups of coffee and you’re feeling jittery, that’s the feeling to describe copper toxicity,” she explained.

Marijuana DOES cause schizophrenia and triggers heart attacks, experts say in landmark study that slams most of the drug's medical benefits as 'unproven'

In fact, the current lack of scientific information 'poses a public health risk,' said the report, released by the National Academies of Sciences, Engineering and Medicine.  The report lists nearly 100 conclusions about marijuana and its similarly acting chemical cousins, drawing on studies published since 1999.

It found strong evidence, for example, that marijuana can treat chronic pain in adults and that similar compounds ease nausea from chemotherapy, with varying degrees of evidence for treating muscle stiffness and spasms in multiple sclerosis.  Limited evidence says marijuana or the other compounds can boost appetite in people with HIV or AIDS, and ease symptoms of post-traumatic stress disorder, the report concluded.

Turning to potential harms, the committee concluded:  Strong evidence links marijuana use to the risk of developing schizophrenia and other causes of psychosis, with the highest risk among the most frequent users.  Some evidence suggests a small increased risk for developing depressive disorders, but there's no evidence either way on whether it affects the course or symptoms of such disorders, or the risk of developing post-traumatic stress disorder....Substantial evidence links pot smoking to worse respiratory symptoms and more frequent episodes of chronic bronchitis.

Marijuana is far more damaging to young teenage brains than we thought, a new study claims.

They found adolescents who smoked pot as early as 14 fared far in cognitive tests when they reached 20 - and dropped out of school at a much higher rate than non-smokers.  There has been a surge in teen cannabis smokers in the last few years, with a 2014 report saying about a third of teenagers try the drug before they reach 15.  But scientists warn new research shows that it is far better for their brains if they wait until after they turn 17.

Planned Parenthood Caught Denying Women Prenatal Care: 92 of 97 Abortion Clinics Turned Them Away

Posted by Jill Fallon at January 30, 2017 5:46 PM | Permalink