Why More Species Live in Amazon Rainforests

New research on the evolution and ecology of treefrogs, published the patterns found in treefrogs may also help to explain the high species richness and why Amazon is one of the most populated areas in animals.

“Treefrogs are a particularly important group to study for understanding amphibian diversity, because they can make up nearly half of all amphibian species in some rainforest sites, that means that frogs can help scientists determine why is that happening. Treefrogs also offer a striking example of the high local-scale biodiversity in the Amazon.

The researchers compiled data on the number of treefrog species at 123 sites around the world and analyzed the data with a new evolutionary tree for 360 treefrog species. They discovered that the richness of treefrog species in the Amazon rainforest sites is not explained by wet, tropical climatic conditions alone.

There is in fact other reasons that scientists still have not determined. They need to investigate a little more to know some other facts that will help them understand.

 

Vitamin D Supplementation Can Decrease Risk of Respiratory Infections in Children

A study supports the possibility that daily vitamin D supplementation can reduce the risk of respiratory infections in winter. An international research team found that vitamin D supplementation decreased the risk of respiratory infections among children who had low blood levels of vitamin D.

The first try,didn´t have the results they expected showing a reduction in the risk of one type of influenza but no effect on another type, so many organizations want to try again te experiment to settle the issue.  But scientifics still are not sure that it will make you immune to other respiratory infections. They must continue testing to make it clear.

Study About Bad Things In Egg Yolks

A study found that regular consumption of egg yolks is about two-thirds as bad as smoking when it comes to increased build-up of carotid plaque, a risk factor for stroke and heart attack.

Atherosclerosis, also called coronary artery disease, is a disorder of the arteries where plaques, aggravated by cholesterol, form on the inner arterial wall. Plaque rupture is the usual cause of most heart attacks and many strokes.

So if you eat a lot of egg yolks you have a bigger chance to get heart disease because of the high amounts of cholesterol and other substances it contain.

Why Babies Are More Likely To Get Sick

It’s been believed that, like walking and talking, fighting viral infections is something children will develop when they get older. They have their immune system not so developed so the diseases get in them quicker than older people. When they start growing their immune system gets better.

Scientists learned key cell signals inhibit the growth of essential immune cells early in life. Blocking this signaling could lead to improving an infant’s response to infection. That is why medicines for babies are so important and necessary.