Antibiotics kill harmful bacteria that cause disease. But they also cause collateral damage to the microbiome, the complex community of bacteria that live in our gut. This results in a profound, though usually temporary, depletion of the beneficial bacteria.

In the wake of cannabis legalization in Canada, a team of scientists has delivered encouraging news for chronic pain sufferers by pinpointing the effective dose of marijuana plant extract cannabidiol for safe pain relief without the typical “high” or euphoria that THC produces.

The number of adults currently using e-cigarettes in the UK is close to 2.9m, many of whom will have turned to the devices to quit smoking. While certainly they may help people kick the habit, there is a big problem with e-cigarettes: we don’t actually know for certain whether they are safe or not.

New research finds an association between some popular heartburn treatments and iron deficiency. Heartburn is a symptom of gastroesophageal reflux, which hydrochloric acid rising into the throat causes. This condition affects more than two million Australians. Many people take medications that suppress acid secretion to treat it.

Chewing gum may be an effective delivery system for some vitamins, according the new research. Nearly 15 percent of all chewing gum varieties sold promise to provide health-enhancing supplements to users, so researchers studied whether two vitamin-supplemented products were effective at delivering vitamins to the body.

If you’re having trouble sleeping, medicines shouldn’t be your first option. Exercise regularly, cut back on coffee (and other caffeinated drinks) after midday, eat less in the evening, ease up on “screen time” before, and in, bed, practise meditation and try to have a quiet, dark bedroom dedicated mostly to sleep.

Researchers have developed a way to reliably predict which chronic pain patients will respond to a sugar placebo pill based on brain anatomy and psychological characteristics. Doctors may one day prescribe placebos that work as effectively as any painkiller for certain patients, the researchers’ new study suggests

Taking low-dose aspirin daily doesn’t preserve good health or delay the onset of disability or dementia in healthy older people. This was one finding from our seven-year study that included more than 19,000 older people from Australia and the US.

Last week I had a shocking cold. Blocked nose, sore throat, and feeling poorly. This made me think about the countless vitamins and supplements on the market that promise to ease symptoms of a cold, help you recover faster, and reduce your chance of getting another cold. When it comes to the common cold (also called upper respiratory tract infections) there is no magic cure (I wish) but some supplements may deliver very minor improvements. Here is what the latest research evidence says.

We are still in love with vitamins a century after they were discovered, with half the US and UK population taking a supplement. Vitamin D – the sunshine vitamin – is the favourite and is believed to have the most proven benefits. Governments, including the UK government, have said that the evidence for vitamin D’s health benefits is so overwhelming that every adult should take it as a supplement for at least six months of the year.

Many parts of the country have seen episodic crises due to synthetic marijuana, the largest occurring in Mississippi, where 721 adverse events were logged between April 2-3, 2015. Even with outbreaks aside, synthetic cannabinoids are 30 times more likely to harm you than regular marijuana.

The vine Banisteriopsis caapi is one ingredient in ayahuasca, a psychedelic brew that Amazonian indigenous populations have long used for spiritual purposes.

There’s only one thing better than a hot cup of coffee in the morning: a new research paper telling you your daily habit is good for your health. Headlines presented the good news from the journal JAMA Internal Medicine.

New research may be among the first to examine how low levels of vitamin D affect physical performance over the long term.

There is broad, scientific consensus that antibiotic use in animal agriculture is increasing the risk of the development of resistant bacteria. It’s less clear what, if any, role this plays in human health.

An ingredient in toothpaste and other personal care products may be harming the microbes in our gut and leaving us vulnerable to disease. The antimicrobial chemical triclosan is in thousands of products that we use daily: hand soaps, toothpastes, body wash, kitchenware and even some toys.

Roseanne Barr has claimed that she was under the influence of the drug Ambien when she posted her already infamous racist tweet (since removed). But what do we know about Ambien and its side effects?

High-dose vitamin D supplements improve weight gain and help with the development of language and motor skills in severely malnourished children, our latest study has found.

Demand for drugs and devices that can enhance brain functions such as memory, creativity, attention and intelligence, is on the rise.

Chamomile – that yellow flower so often made into a tea, enjoyed before bed – is a very interesting plant. It was recently discovered that the humble flower may control or even prevent diabetes...