To go along with mini thinking brain balls grown in lab, researchers have built functional, tiny organs as well—inching closer to the possibility of stitching together teeny-weeny Frankenstein monsters.
The next time someone refers to a horror movie as “bloodcurdling,” they might actually be kinda right. A new study shows that the fear experienced when watching scary movies is in fact associated with an increase in clotting agents in the blood.
The fear response includes a big squirt of epinephrine which increases your heart rate and constricts blood vessels so you can run from the bear faster and bleed less when it bites. That your body also dumps clotting factors dovetails with this system nicely. What’s really surprising is that this hadn’t been recognized previously.
But I’d like to see if the findings stand up in a larger sample size.
Thirteen percent of newborns with congenital heart disease (CHD) also have congenital abnormalities that don’t affect the heart. This is twice the rate at which they appear in newborns without heart problems. Infants with CHD are also at an increased risk of neurodevelopmental disorders later in life, like motor, social, language, and cognitive impairments.
These elevated risks were thought to be caused by poor circulation during gestation or the stresses imposed by postnatal therapies. But a new study suggests that both types of abnormality are actually due to mutations in genes highly expressed in the developing heart and brain. Results are published in Science.
Interventions in early development often require referral during the first three years, but due to variability in early development, a child may effectively “fly under the radar” because they are mildly delayed, but showing just enough progress to be deferred until later. Many pediatricians may not make an early referral for these reasons and the child may show up for a first developmental evaluation (specialist) around age 4 or 5 years. By this point a lot of opportunity has been missed and other skills (e.g., social skills) may begin to lag behind due to increased frustration and aggression (and lots of disciplinary incidents).
This knowledge may help flag a child as being at greater risk and result in earlier pediatrician referrals, thus catching the problem earlier.
If you’re among of the millions of Americans who dutifully carve out 30 minutes a day for the moderate-intensity exercise recommended by experts based on the idea that you’re doing all you can for your heart, you’re in for some disappointing news.
A new analysis published Monday in the journal Circulation finds that that amount of activity may not be good enough.
Who do you think would have more artery clogging in the heart: (A) a group of sedentary, overweight men; or (B) a group of men who are slightly older, much leaner, and have run at least one marathon annually for 25 years?
The sample size isn’t terribly large, and while the study says they couldn’t pinpoint why the plaque was happening. But from numerous people I’ve spoken to, there’s a percentage who run marathons/etc but eat poorly. Those that eat poorly, due so because they are looking to consumer lots of calories, salt, or just “reward” themselves with nutritionally poor food.
Almost everything we consider common knowledge today was once a total mystery. Around the second century AD, no one in the western world knew that the arteries, veins, and heart were filled with blood. Most thought they were filled with air. Here’s how one man disproved that theory.
It is my understanding that the word “artery” is derived from the Greek word for windpipe, “arteria”; so we are kind of holding on to the misconception.
One of my favourite stories about how digestion functions was learnt during a war (Napoleonic?). Anyone could be a doctor in those days, and lots learnt from sowing up soldiers… One soldier sustained a wound to the tummy, allowing a doctor to feed the soldier directly. But I don’t think the soldier made it 😉
A new study has found that eating high-levels of certain proteins found in meat and plant-based foods can lower blood pressure and arterial stiffness leading to better heart health. According to researchers from the University of East Anglia (UEA), eating foods rich in amino acids, the building blocks of proteins, could be good for your heart.
Here’s new tech that’ll make wearables as non-invasive as a Band-Aid. Japanese researchers have created a printable conducive ink on cloth, which means your boxer briefs or sports bra could one day track your heart rate (among other things).
In October 2014, multiple headlines reported that a heart had stopped beating and been revived, before being transplanted into a living recipient. Scientists in Australia told the story of how they had transplanted the ‘dead’ heart. Could this be the answer to the shortage of donor hearts? Oscar Howard ‘Bud’ Frazier and his colleague Dr William ‘Billy’ Cohn of the Texas Heart Institute don’t think so.
I wish the article gave more information about the three minute window for a heart transplant. There’s mention of packing organs in ice, but why not just ship the entire body? The idea isn’t without its complications, but when such are the constraints of medicine currently – what choice is there?
In 1893, as far as the world was concerned, surgery on the heart was unheard of and a stab in the heart was nearly always fatal. Today, eighty percent of people who have been stabbed in the heart wind up surviving. Here’s the story of how one doctor started the process of changing the odds.
I’d like to take a moment to encourage readers to not get stabbed in the heart. Also don’t stab anyone else in the heart… unless you have a way of cleaning up the evidence and a rock solid alibi. And I mean solid, people. Your mother will do – they won’t believe her.
Bonus round: Read about Werner Forssmann, who proved that you could run a catheter to the heart. Most people thought this would be fatal, such that he had to tie a nurse a the table so she couldn’t stop him. He did it to himself before walking down to X-ray, ultimately proving he’d done it.