Developing countries are pumping livestock full of antibiotics at such a startling rate that they are dramatically increasing the risk of creating drug-resistant "super bugs", scientists warned on Monday.

Antibiotic use in animals is expected to surge by two thirds globally between 2010 and 2030, while doubling in emerging giants like China, Brazil, India and Russia, according to a Princeton University study.

It warned that the practice is pushing us closer to a time when common infections could become a death sentence because they will no longer respond to drugs.

Consumption of meat, milk and eggs is growing fast in many developing and middle-income countries.

Urbanisation, increased wealth and changing diets mean industrial livestock producers are expanding rapidly.

They are relying on antibiotics to keep disease at bay in the short-term, said co-author Tim Robinson, a scientist with the International Livestock Research Institute (ILRI).

But the systematic use of low doses on livestock is creating "perfect conditions to grow resistant bacteria", he told the Thomson Reuters Foundation.

Bacteria like E. coli and salmonella are already becoming resistant to antibiotics, Robinson said, increasing fears that these diseases will endanger humans.

Passed from animals to people through food contamination, direct contact or the broader environment, antibiotic resistant bacteria will make it harder for doctors to treat basic infections or other ailments, he said.

The study by experts from Princeton, ILRI and the National Institutes of Health is the first to measure global antibiotic consumption by livestock.

Asia is the main region of concern as this is where demand for livestock products is growing dramatically while regulations governing antibiotic use in animals are either non-existent or not publicly available, scientists say.

China`s livestock industry alone could soon be consuming nearly one third of the world`s antibiotics.

The five countries with the largest projected increases in antibiotics consumption are Myanmar (205 percent), Nigeria (163 percent), Peru (160 percent) and Vietnam (157 percent).

Increasing food production for the estimated 805 million people who go to bed hungry every night will require a new approach that is less reliant on intensive, antibiotic-fuelled breeding, Robinson said.

"Poor livestock producers aren`t responsible for this problem, it`s the big firms rushing to meet demand in the growing cities," he added.

But the poor will be worst affected if resistant bacteria transfer to humans more often, he said, because they will be the least able to afford the bigger and more frequent doses of drugs required to fight infections.

A new book has observed that emotions can dictate how you eat and also demonstrates what kind of eater one is.

Hypnotherapist Marisa Peer in her new book suggests that there are different kinds of eaters like one can be an emotional eater or a habitual eater or a destructive eater or an angry eater, the Daily Express reported.

Emotional eaters find temporary relief from loneliness, boredom and sadness when they fill their stomachs with refined carbohydrates. The feeling of fullness from eating soft, sweet foods such as cake and ice cream leads to a temporary feeling of satisfaction and calmness.

Habitual eaters will eat whenever they are given the opportunity, without being aware of whether they are actually hungry.

Destructive eaters often feel uncomfortable if they are not in control of their own eating, whereas, angry eaters like crunchy or chewy foods because they find chewing hard helpful when they are feeling tense or wound up.

A new study has revealed that eating at the right time is as important as what the person is eating in order to maintain a healthy heart.

Researchers at San Diego State University and the Salk Institute for Biological Studies found that by limiting the time span during which fruit flies could eat, they could prevent aging-and diet-related heart problems.

The researchers also discovered that genes responsible for the body's circadian rhythm are integral to this process, but they're not yet sure how.

Previous research has found that people who tend to eat later in the day and into the night have a higher chance of developing heart disease than people who cut off their food consumption earlier.

The researchers also sequenced the RNA of the flies at various points in the experiment to find which of their genes had changed as a result of time-restricted feeding.

They identified three genetic pathways that appear to be involved: the TCP-1 ring complex chaperonin, which helps proteins fold; mitochondrial electron transport chain complexes (mETC); and a suite of genes responsible for the body's circadian rhythm.

Girish Melkani, a biologist at SDSU whose research focuses on cardiovascular physiology was optimistic that the results could one day translate into cardiac- and obesity-related health benefits for humans.

The study is published in Science.

We all know that malaria parasites evade the human immune system while living in human red blood cells. A good news is that according to a new study, blood type O provides protection against malaria.

The study suggests that a protein secreted by parasites called RIFIN, plays an important role in providing protection against malaria in people who have blood group O.

A team of Scandinavian scientists explains the mechanisms behind the protection that blood type O provides and suggests that the selective pressure imposed by malaria may contribute to the variable global distribution of ABO blood groups in the human population.

It has long been known that people with blood type O are protected against severe malaria, while those with other types, such as A, often fall into a coma and die. Unpacking the mechanisms behind this has been one of the main goals of malaria research.

Scientists led from Karolinska Institutet in Sweden have now identified a new and important piece of the puzzle by describing the key part played by the RIFIN protein.

Using data from different kinds of experiment on cell cultures and animals, they show how the Plasmodium falciparum parasite secretes RIFIN, and how the protein makes its way to the surface of the blood cell, where it acts like glue. The team also demonstrates how it bonds strongly with the surface of type A blood cells, but only weakly to type O.

Principal investigator Mats Wahlgren describes the finding as conceptually simple, however, since RIFIN is found in many different variants, it has taken the research team a lot of time to isolate exactly which variant is responsible for this mechanism.

Wahlgren said that their study ties together previous findings, adding they can explain the mechanism behind the protection that blood group O provides against severe malaria, which can, in turn, explain why the blood type is so common in the areas where malaria is common.

Wahlgren added that in Nigeria, for instance, more than half of the population belongs to blood group O, which protects against malaria.

The study was published in Nature Medicine.

Combined with the antidiabetic drug metformin, an onion extract can help lower high blood glucose (sugar) and total cholesterol levels among diabetics, says a study.

The onion extract used for the experiment in rats was a crude preparation from onion bulb.

"We need to investigate the mechanism by which onion brought about the blood glucose reduction," said lead investigator Anthony Ojieh from the Delta State University in Abraka, Nigeria.

"We do not yet have an explanation," Ojieh noted.

To rats with medically induced diabetes, the researchers gave metformin and varying doses of onion extract -- 200, 400 and 600 milligrams per kilograms of body weight daily (mg/kg/day) -- to see if it would enhance the drug's effects.

Two doses of onion extract, 400 and 600 mg/kg/day, strongly reduced fasting blood sugar levels in diabetic rats by 50 percent and 35 percent, respectively, compared with "baseline" levels at the start of the study before the rodents received onion extract, Ojieh reported.

It reportedly lowered the total cholesterol level in diabetic rats, with the two larger doses again having the greatest effects.

Onion extract led to an increase in average weight among nondiabetic rats but not diabetic rats.

"Onion is not high in calories. However, it seems to increase the metabolic rate and, with that, to increase the appetite, leading to an increase in feeding," Ojieh said.

The findings were presented at ENDO 2015, the annual meeting of the Endocrine Society in San Diego, California.