For a healthier New Year have a hug every day! (and other quirky but effective resolutions from a top doctor)
- More than 40 per cent of our daily actions are due to habit
- 'Too many people have ingrained habits that sabotage their health'
- Cancer doctor David Agus shares vital new secrets of how to live longer
Dr David Agus is one of the world's leading cancer doctors. He is a professor of medicine at the University of Southern California Keck School of Medicine and heads USC's Westside Cancer Centre.
Want to live a long and healthy life? Who doesn't? You have more chance of achieving it than before. We are entering a medical era where diseases once thought lethal are becoming treatable and every detail of our health can be checked and monitored.
I call these the lucky years - soon we will have access to information and technology that will transform the outlook for our well being.
We are entering a medical era where diseases once thought lethal are becoming treatable
Yet I worry many people will not survive to benefit from this medical revolution because too many have ingrained habits that sabotage their health.
More than 40 per cent of the actions we perform each day, from what we eat and how we exercise, are due to habit rather than conscious decisions.
So, how should you be living? Here I share some of the most vital new secrets of how to future-proof your body:
AVOID PROCESSED FOOD ADDITIVES
The bacteria in our bodies outnumber our cells by ten times. Collectively, they are called our microbiome and it turns out to have a sweeping say in whether we live robustly to a ripe old age.
The science of understanding the microbiome is still in its infancy, but I expect it to explode in the coming decade. Already, scientists have identified a 'diabetes fingerprint' of gut bacteria that correlates with the disease.
In the near future we will learn how we can adjust the microbiome to prevent and treat a variety of chronic illnesses simply by tweaking our diet.
Look on labels for carrageenan, polysorbate-80, polyglycerols, guar gum, locust bean gum, carboxymethylcellulose and xanthan gum
A study by Georgia State University scientists in the journal Nature this year warned emulsifiers seem to have particularly damaging effects on our microbiome.
Emulsifiers are blending agents in foods with unmixable ingredients such as oil and water, and are found in processed foods such as ice cream, salad dressings and cream cheese.
Look on labels for carrageenan, polysorbate-80, polyglycerols, guar gum, locust bean gum, carboxymethylcellulose and xanthan gum.
When Georgia State investigators fed emulsifiers to healthy mice, they developed intestinal inflammation and a metabolic disorder that caused them to eat more.
They became obese, their blood sugars rose to unhealthy levels and they became resistant to insulin and at severe risk of diabetes.
Emulsifiers appear to disrupt the protective layer of mucous that protects the intestinal tract.
As a result, gut bacteria can cause inflammation as the body reacts to the bacteria being in the wrong place. The inflammation interferes with systems that regulate appetite and fullness.
SHARE MORE CUDDLES
Human touch has the power to change our heart rate, lower blood pressure and cortisol levels, spark the release of feel-good chemicals in the brain and stimulate the hippocampus
If you want to optimise your immune defences, hugging could be key.
Like a magic wand, human touch has the power to change our heart rate, lower blood pressure and cortisol levels, spark the release of feel-good chemicals in the brain and stimulate the hippocampus - the area that regulates memory.
In 2014, researchers from the universities of Virginia and Pittsburgh monitored more than 400 adults over two weeks, asking them about their daily hug counts and social interactions.
Then the people were sent to rooms on an isolated hotel floor where they were exposed to a common cold virus.
About three-quarters became infected and a third showed obvious signs of illness. But those who had the most loving social interactions sailed through the infection with fewer symptoms. Researchers said social support, in particular, hugging and touching, reduced symptoms by 32 per cent. So keep cuddling.
Popular non-steroidal anti-inflammatory painkillers (NSAIDs), for example, can increase risk of heart attack [file photo]
CUT BACK ON VITAMINS
Sir William Osler, a 19th-century Canadian physician, fondly known as the father of modern medicine, once said: 'The person who takes medicine must recover twice, once from the disease and once from the medicine.'
Take an inventory of your medications and the conditions for which they were prescribed. Include over-the-counter drugs, vitamins and supplements you take, and why you take them.
You may find you can't fully answer 'why'. This may inspire you to taper off certain medications or find alternative ways to manage your condition that are better for you and your body.
Before you stop taking any prescribed drugs, though, you should consult your GP.
Don't underestimate over-the-counter medications - many of which were once only available on prescription. Popular non-steroidal anti-inflammatory painkillers (NSAIDs), for example, can increase risk of heart attack and stroke with regular use - even within a few weeks.
In July, the U.S. Food and Drug Administration told drug makers to strengthen warnings about this on packaging.
AVOID FRIENDS WHO UPSET YOU
It's a cliche, but it's true: a positive outlook is key to health.
And if people were more attuned to their changing moods and behavioural triggers, would so many take powerful mind-altering medications to regulate their moods? I think not. Tracking changing daily moods can help you to better understand why symptoms occur when they do - such as being moody when talking to certain people - and avoid things that trigger low mood.
It can reveal whether drugs or therapy work.
Online mood trackers and apps are available, but you can do it the old-fashioned way with intuition - tracking your mood throughout the day and taking note of it.
You can then alter your habits to avoid low mood triggers.
THROW OUT YOUR ALARM CLOCK
With our 24-7 access to media, online retail, artificial light and our urge to check phones and emails constantly, many of us suffer from a lack of sleep.
Yet sleep directs many of your body's physiological rhythms.
Don't use an alarm clock. Go to bed when you get tired. Stop using electronic devices beforehand
One of sleep's most important roles involves helping the brain to set our hormonal balance.
This includes hormones that control appetite, help us manage stress, heal and fight infections, rekindle our fat-burning systems and renew skin and bones.
sleep-replenished hormones can lower our risk of heart disease and stroke, sharpen planning and memory skills, improve concentration, regenerate the heart, liver, lungs and kidneys, and rejuvenate organs and tissues.
Track your sleep with a diary or an electronic device. If you feel refreshed and awake during the day, you've probably found your optimal sleep time
Side-effects of poor sleep habits include hypertension, confusion, memory loss, an inability to learn new things, obesity, cardiovascular disease and depression.
It only takes two weeks to figure out your optimal amount of sleep.
Don't use an alarm clock. Go to bed when you get tired. Stop using electronic devices beforehand, because the light they emit can suppress the body's production of the sleep hormone melatonin.
Track your sleep with a diary or an electronic device.
If you feel refreshed and awake during the day, you've probably found your optimal sleep time.
The challenge is then to alter your habits to allow yourself to get that much sleep.
WALK DAILY FOR A LONGER LIFE
Having a good proportion of muscle in your body is arguably as fundamental to health as food and sleep.
450 minutes' exercise is the optimum weekly amount for a long life. This is a little more than an hour a day
Studies associate muscular strength with wide-ranging health benefits, such as lower blood pressure, lower diabetes risk and better cholesterol levels.
Higher levels of muscle mass are associated with lower levels of chronic inflammation in the body.
Such inflammation can significantly raise the risk of heart disease and cancer. Multiple studies show the lower the muscle mass, the longer it takes to recuperate from illness.
Losing strength as you age isn't inevitable. A Pittsburgh University study in 2011 of recreational athletes aged 40 to 81 found muscle mass declines often from disuse, rather than muscle ageing.
Two large-scale studies in JAMA Internal Medicine suggest 450 minutes' exercise is the optimum weekly amount for a long life. This is a little more than an hour a day.
And it need not be strenuous - walking counts.
The studies, involving 660,000 people, found this reduced the exercisers' risk of dying early by about a third, compared with people who didn't exercise.