Showing posts with label heart. Show all posts
Showing posts with label heart. Show all posts

High Meat Consumption Blamed for Obesity - Questionable!

In the twentieth century Australia was dominant in swimming at international events. This was largely due to the high consumption of meat in the diet of Australians. As time went by other nations noticed this and their athletes ate more meat. Today, Even small island nations have access to reasonably priced beef, pork, lamb and poultry. Consequently, Australia's dominance has waned.

Despite consuming a lot of meat, Australians did not die at a young age. Indeed, longevity was extended. New research points to an increase in heart disease, obesity, cancer and diabetes that do tend to shorten life. An example was given of Hawaii where these diseases are rapidly increasing. Red meat is seen as the major cause.

This research has flaws. Higher red meat consumption cannot be directly linked to more "modern" maladies. It could be coincidence. No tests were done on the rising consumption of refined carbohydrates. The call for more vegetables in the diet will improve the situation, but only if less red meat and refined carbohydrates are consumed.

There is an indirect link between red meat consumption and more disease. The feeding of antibiotics to animals to improve body weight has impacted on humans. Antibiotics are not so effective in people generally. Some countries have banned this practice, but all nations need to do so. Overall, there is no evidence of antibiotics in animal feed leading to modern diseases. Control of infections is the biggest problem.
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Society
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Synthetic Heart Repair Conduit

Treatment for heart disease is advancing at a rapid pace. Soon, a tiny piece of artery will be removed from a patient and a new heart conduit will be formed. This is for minor problems in the heart, less that 5mm wide.

Conduits are also being made from synthetic materials. Toleration of foreign substances is not a problems because it degrades quickly. They are used to go over the outside of a graft to stop bleeding. The synthetic conduits are made of a fine poly-(glycerol sebacate) net coated with polycaprolactone and the anticoagulant heparin. Mesh holes are too small for blood to pass through. Nothing of the implant remains after three months. A new structure of endogenous cells with M2 macrophages (which reduces inflammation) remains.

Though tests have only been done on rats, use in humans will probably be just as successful. Large grafts using the material will be done to see if this is feasible. This will be a welcome advance in medicine. A graft made of the body's own tissue will last much longer and patients will not need to be treated again for obstruction in the new graft.
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Health

Handwriting Shows Whether a Person Has Heart Problems

Just as jerky handwriting can indicate that a person has cancer, so handwriting shows if a person has heart disease. Christina Strang gave a presentation at the International Graphonomics Society in Melbourne stating that she examined the handwriting of over 1,000 people in their 60s.

The handwriting expert magnified handwriting looking for traits such as momentary stop-starts, location of dots, odd shaped 'o's, etc. She found that people with cardiac problems had more "resting dots" in the upper parts of 'a', 'e' and 'o's, vis-a-vis the control group.

Doctors have dismissed the findings as being too general and unscientific, in much the same way as they did with similar research into Alzheimer's, Huntington's and Parkinson's diseases.
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Health

New Super Strong Nanotube 'Muscle' Developed

Superman or indeed cyberman could soon be with us. Artificial muscles that can hold thousands of times their own weight have been invented. The breakthrough has been made by a team from four nations: Australia, Canada, the US and Korea. Carbon nanotubes were first wound into yarn in Australia. This super strong material far exceeds the flexibility of other artificial muscles.

This is not strictly new. It was done several years ago but now work is under way to apply the technology. The yarn is does not yet have enough mass to be used for arm or leg muscles. Ideally, better heart valves, pumps, and positioners could be developed.

The yarn has an interesting property: it can be made into a helical structure that will rotate right or left. Applying an electric charge causes it to spin. This makes it easy to propel a tiny object along in the bloodstream for example. This new discovery could revolutionize medicine.
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Health

Danger of Heart Attack After Losing a Spouse

It seems people don't live on after their partner passes away. There is a higher risk of survivors getting a heart attack in the months after losing a husband or wife. It is believed to be due to the increased heart rate from the loss. If the living partner can get through the danger period the risk dissipates.

This shows that people who lose partners need medical help and support from friends and relatives during the grieving process. Doctors should pay special attention to cardiac symptoms. Persistent stress and depression should also be monitored.

The research involved people aged from 33 to 91, so this tendency affects spouses of any age. Subjects wore 24 hour monitors. Heart rate was closely observed. Periods of rapid heart beat occurred during the grieving period. Overall heart rate was also higher compared to people who had not had a loss.

Depression was four time higher than the norm in subjects. This persisted for several years.
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Health

New Treatment for Asthma With Beneficial Side Effect

A new method of treating asthma has been discovered. Formoterol is a synthetic form of catecholamine. This is a hormone that regulates metabolism, heart rate and breathing. It increases metabolism without raising the heart rate. Tests on animals have been promising.

The drug is selective in that receptors in the lungs take on the catecholamine but receptors in the heart do not. A positive side effect it that it burns fat from the body. Eight men without asthma were given the medication for a week. Their energy metabolism increased by 10 per cent. Fat was burned off by 25 per cent. Protein only fell by 15 per cent. This means people can do more with leaner bodies.

We may be entering a new age where obese people no longer have to suffer. They can have healthy bodies in the normal weight range. Tests on those with asthma will set the stage for this. Subjects will be closely monitored to determine long term effects. Hopefully they will all be beneficial.
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Health