A good time to get weight in trim

New Year is a familiar time for people to make resolutions and aims to improve lifestyle.

Why bother about overweight?
Excess weight increases the burden of cardiovascular risk (high blood pressure, raised cholesterol and diabetes mellitus); causes premature ageing of arteries, leading to heart attacks, strokes and other serious disorders of the heart, brain and circulation; contributes to risk of sleep dusturbance and sleep apnoea syndrome; causes premature joint ageing with arthritis; non-alcholic fatty liver disease is the commonest cause worldwide of liver damage; and increased risk of cancers - weight gain and overweight estimated to be linked to 1 in 5 cancers.
People who have no difficulty in maintaining normal weight may find it difficult to understand the challenges. For those who are currently overweight, the challenges in regaining a more healthy weight include beating the psychological, physical and social addiction to causes of overweight, and resisting peer pressure.

Getting started
Importants steps on the path to reducing excess weight include being ready to think about action, to think about taking action and to prepare to take action. That might mean telling friends and family you are serious about losing weight, and to seek whatever help may work - e.g.  family doctor or nurse or other health professional, and support groups for the overweight.

What works? 
Smaller portion size, cutting down on processed foods and increasing exercise are the big 3 factors that help. Keep a weight chart and if possible find a friend with whom to lose overweight. Wear a belt. Pace your eating and drink water with your food. Eat regular small meals. Avoid snacking, Research evidence suggests that successful measures include recording weight regularly, knowing the approximate energy intake of what you eat, and regular activity.
It is also clear that insight into the personal health risks of overweight provide extra incentive to lose weight. Better of course to reduce excess weight before serious clinical effects of overweight occur.
There are many support groups and diet plans available to order, often at high cost.

Research evidence suggests that success in maintaining weight loss is associated with clear strategies for coping with life stresses and with 'continued adherence to diet and exercise strategies, low levels of depression and disinhibition, and medical triggers for weight loss'. In contrast, unsuccessful weight maintainers are erratic or inconsistent in recording their weight and being vigilant in keeping to healthy types and amounts of food and in continuing regular activity.
Once overweight people have maintained a weight loss for 2-5 years, the chances of longer-term success in maintaining a healthy weight are much greater.
 
Apps
 There an increasing variety of 'apps' for smartphones and PCs, that reinforce the combined impact of healthier dietary intake and maximising exercise. Many are free, with myfitnesspal an excellent example. These and other free lifestyle apps are like your personal health bank. The more active you are, the more energy balance you have towards losing weight, the more you eat, the less reserves in your health bank.

© DRJ Singer
@HealthMed 

Exercise and cardiovascular health on Everest

Jesuit priest Father Jose Acosta, wrote of his crossing the Andes in the late 16th century problems with sickness and vomiting which he attributed to the "thinne air", so "delicate as it is not proportionable wth the breathing of man". In 1865 the first man to climb the Matterhorn, Edward Whymper, recently commemorated in London by a blue plaque, was an early student of sickess at altitude. In recent modern times, climber Charles Houston made a major contribution to research into mountain sickness, his interest inspired by his episode in August 1953 of unconsciousness high on K2. He crystallised key ideas on mechanisms in his 1980 book "Going Higher: Oxygen, Man and Mountains".  Speaking about his talk at the 14th July Symposium on 'Exercise and Cardiovascular Health’ organized by the Cardiovascular Research Trust, Professor Chris Imray commented: "increasing numbers of people travel to altitude for both leisure and work purposes. On ascent to altitude, there is a reduction in atmospheric pressure, and there is consequently a reduction in the inspired levels of oxygen. The resulting physiological challenge stresses the body both at rest and further during exercise.

The cardio-respiratory challenges and the subsequent responses of ascending to high altitude will be discussed in detail, as will the role of ‘altitude training’."

Professor Imray will present "unique data from the Caudwell Xtreme Everest expedition, including arterial blood gases and the response to exercise at extreme altitude ...".

These studies provide important messages for health and risk for climbers at high altitude. They raise interesting questions about impact on brain and heart function of working at high altitude for border guards who are not acclimatised to low oxygen levels. They also provide insight into the physiological challenges and pressure for emergence of survival genetic variants for populations historically living at altitude.

See the symposium website for the programme.

Exercise and cardiovascular health

The good news is that even mild activity can be helpful in keeping healthy and in reducing risk of joining the pandemic of cardiovascular disease in the 'developed' world and emerging epidemic of heart attacks and strokes in less developed countries.

At the elite end of the exercise spectrum, internationally competitive athletes benefit from positive feedback effects of exercise on the heart and circulation. 

And for patients with established clinical heart problems, exercise under medical supervision is now well recognised to help to complement medical and surgical treatments to aid recovery and reduce the risk of future heart disease.
Not a good idea though for the out-of-condition to go from none to extreme exercise. What advice should the health or sports professional consider ?
These themes form the programme for a symposium on 'Exercise and cardiovascular health' in London on the afternoon of Thursday 14th July 2011. 

Of interest to a diverse audience - sports professionals and health professionals and students looking for an update on benefits and risks of exercise, from prospective to the elite athletes interested in benefits of exercise for their health and performance, to people with heart conditions wanting to find out more about exercise and the heart. And as an interesting case study on extreme athletes, surgeon and Everest researcher and mountaineer Professor Chris Imray will be discussing exercise at extreme altitude. 

See the symposium website for the programme.