The ABC Health Report had a very interesting segment on studies done on why we get fat.
Dr Norman Swan interviewed Dariush Mozaffarian an Associate Professor from Boston who is also an Epidemiologist at Harvard School of Health. Below are some notes from the episode.
Studies looked at the main determinants of very slow weight gain - examining lifestyle changes simultaneously.
Every person gains about half a kilo a year which is not noticeable but does allow you to become overweight.
They looked at three separate long term studies i.e. 10,000 people over a year with up to 20 years of follow up.
Not all food and beverages are treated equally this goes against conventional wisdom like everything in moderation, total calories and adjust the fat content in food.
It found there are very big differences in how foods relate to weight gain.
Some foods when increased did not lead to weight gain. (loss actually)
Fruit nuts whole foods - when you use these foods you displace other foods in the diet and lose weight.
Nuts associated with relative weight loss
Low fat diary, whole fat milk and cheese (surprisingly).
Foods associated with weight gain include the obvious ones like white bread and refined foods.
Cutting fat out of your diet to get weight loss was not substantiated by the science
Important was the quality of the carbohydrate you eat - starches refined grains.
Any kind of refined carbohydrate and complex sugars lead to weight gain.
Potatoes (no matter how prepared), all types of refined grains (breakfast cereals, white bread, white rice)
Meats processed and unprocessed. (no explanation more study required)
When you eat a refined food white bread or potato it has almost the same metabolic effect on your body as eating table sugar.
We breakdown those long chains of carbohydrate which are sugar almost immediately. (burst of sugar - same as eating sugar).
For a balanced diet we must look at overall carbohydrate quality.
Hi GI turn into sugar quickly and in turn lead to more food being eaten and feeling hungrier quicker.
A study showed with children if they have a high GI breakfast they will eat more for lunch.
Hence what you eat at one meal also effects what you eat at the next meal.
Important to concentrate on foods with good carbohydrate quality.
Pasta has low GI compared to potatoes and white rice and if cooked al-dente it is even lower and if mixed with vegetables (lower GI).
Fat type did not matter Saturated, Polyunsaturated or Monounsaturated.
This does not mean that other health effects of these fats did not matter just weight gain is not influenced by preference.
Physical activity (up and down), television watching and sleep deprivation linked to weight gain
The study found the overall effect of diet was 2 to 3 times the effect of physical activity.
Sleep is associated with weight gain, low sleep (less than 6 hours) decrease sleep, increase hunger - caused by our change of preferences to comfort foods when losing sleep.
Major impact is through the diet not lack of physical activity (2 major studies confirmed this)
There was reduced weight with less TV however this was due to kids snacking less (advertising - subconscious effect).
If TV was replaced with reading they still lost weight.
Hence it is easy to gain weight (half kilo per year) however a few minor changes can keep that down.
Avoid processed refined foods. Fruits vegetables whole grains nuts and yogurt are best for losing weight long term.
20/11/2017 Hokkaido Pumpkins »
25/08/2017 Are you sitting at your desk properly? »
21/06/2017 Health issues with cockroaches »
09/06/2017 Tennis Court Dreaming »
03/03/2017 Is Food to Blame? »
03/02/2017 Appointment Booking System »
09/12/2016 How Procrastinating feeds Emotional Eating »
22/11/2016 Emotional Eaters! »
22/06/2016 Perfection doesn't exist »
12/06/2016 Diets Don't Work »
13/07/2015 Height Adjustable Desk »
31/10/2013 Healthy Hair »
31/10/2013 Fresh Breath »
08/07/2013 Gold Coast Marathon 2013 »
27/03/2013 Is Chocolate good for you? »
04/03/2013 Kill the pests not your family »
11/12/2012 Prolonged Sitting Not Healthy »
13/11/2012 Is Mould Harming Your Health? »
23/01/2012 The importance of Yoga »
06/12/2011 Yoga vs Pilates »
05/08/2011 Pelvic-Floor exercises for men »
08/06/2011 Retreat in Phuket »
17/05/2011 How to Sleep better »
10/01/2011 Conscious Pregnancy with Kundalini Yoga »
05/01/2011 The benefits of Barley Grass powder »
13/12/2010 Alfalfa the father of all foods »
30/09/2010 Regaining your beauty »
24/05/2010 How does spray tanning work? »
11/02/2010 Is Boxing healthy for you »
29/01/2010 Gold Coast Markets »
03/01/2010 Organic Ice Tea a Healthy Alternative »
01/12/2009 Is Coffee ruining your Health »
13/11/2009 How much excercise for this much food »
13/09/2009 Gold Coast wins World Cup Triathlon »
15/06/2009 The Yoga Warrior Poses »
25/04/2009 Why join Gold Coast Health? »