Health

Promising to rid your body of the "toxins" resulting from poor diet and lifestyle, the claim is these diets will leave you cleansed and revitalised — and perhaps a few kilos lighter to boot.

But do these programs, which often involve consuming expensive powders and potions, really do anything to improve your health?

So what do nutritionists recommend to munch on? It turns out that quality carbohydrates are important pre-workout and lean proteins post-workout, experts say.

What to eat before exercise

Before you exercise, eat carbs, but not too much, said Nancy Cohen, a professor in the department of nutrition at the University of Massachusetts in Amherst.

But new research shows that we may have been underestimating the role of the humble goosebump.

Professor Rod Sinclair, dermatologist at the University of Melbourne, explained he had been "following a hunch" that goosebumps were not just an evolutionary by-product.

It turns out that Professor Sinclair's hunch may have been on track, as his new research shows the "goosebump muscle" could hold the key for skin cancer, baldness and burns treatment.

"As we do more research we find that nothing is for nothing. It's almost as though there's a grand design to the body.

It's no wonder the festive season is a peak time for weight gain many of us spend the entire year ahead trying to reverse.

For most of us, it's a time to relax and unwind — and sometimes an opportunity to indulge in booze.

"It's common knowledge that many people up their alcohol intake over the summer period," psychologist and public health expert Dr Bosco Rowland said.

It is, after all, the season to be jolly.

But according to Dr Rowland, it's also a timely reminder of the dangers of excessive drinking, and why it's important to drink responsibly.

How much is safe to drink?

Consuming more than four portions a week is a risk, suggests the study of nearly 1,000 French people, published in the journal Thorax.

The researchers believe it could be a preservative called nitrite used in meats such as sausages, salami and ham that aggravates the airways.

But experts say the link has not been proved and more investigations are needed.

Rather than worry about one type of food, people should be eating a healthy and varied diet, they advise.

The team found both the platypus and echidna produce a long-lasting form of the hormone glucagon-like peptide-1 (GLP-1).

GLP-1 is normally secreted in the gut of both humans and animals, stimulating the release of insulin to lower blood glucose levels.

But GLP-1 typically degrades within minutes.

Lead researcher Frank Grutzner said his team was surprised to find the hormone was produced not only in the platypus' gut, but also in its venom.

Patients at the Princess Alexandra Hospital will start undergoing treatment within days now that the new computer program, Calypso, has gone online.

Patients at the Princess Alexandra Hospital will start undergoing treatment within days now that the new computer program, Calypso, has gone online.

The Committee of Presidents of Medical Colleges, representing bodies including the Royal Australian College of GPs, the Royal Australasian College of Physicians and the Royal Australasian College of Surgeons, has developed a six-point obesity action plan to tackle what it calls the most pressing public health issue.

Professor Nick Talley, head of the Committee of the Presidents of Medical Colleges, said urgent definitive action was needed.

"We need leadership, not just telling people to lose weight," he said.