I often use the analogy of a car to explain this. The same way that a larger car will burn more fuel whether stationary with the engine ticking over or during movement is the same as heavier person burning more calories whether sitting down and resting, or during movement or exercise. A heavier person just like a larger car needs more energy to fuel the heavier mass. Therefore, overweight or obese people have a higher metabolism than ‘normal’ weight people, not lower.
4. Carbohydrates are fattening, so I don’t eat things like bread, pasta or rice
High protein, low carbohydrate diets are all the rage now. People who are trying to manage their weight stay clear of carbohydrates in fear that they are going to put on weight.
A calorie is a calorie is a calorie! So regardless of the food source or food group, if you take in more calories than your body requires, you will put on weight. Some people do lose weight when they eliminate carbohydrates from the diet, but given that typically 50% of our intake is made up of carbohydrates, it stands to reason that you will lose weight, but this is not because of the carbohydrate itself but more because of the reduction in your daily calorie intake.
It is worth pointing out to all the high protein/low carbohydrate diet fans that gram for gram carbohydrates contain the same amount of calories as protein. Given that carbohydrates provide us with a good and essential source of nutrients (that we cannot always get from protein) it would be better to moderate the portions of carbohydrates rather than cut them out altogether.
5. Eating late at night causes me to put on weight
In terms of weight loss it does not matter what time of day you eat your meals. What matters is the amount of calories you consume over the course of the day. If you consume more calories than your body requires, you will put on weight.
A calorie is a calorie is a calorie regardless of what the food is or when it is eaten. Of course, if you eat excess calories at night (or during the day) you will be at an increased risk of putting on weight. Our bodies do not recognise the time of day when it comes to storing fat from an over indulgence of calories. Eating late at night will probably only result in an uncomfortable night’s sleep.
6. The recommended 1.5 to 2 litres per day should only be made up of water only
In temperate climates like here in the UK, it is suggested that most of us need 1.5 – 2 litres of fluid (six to eight glasses) to prevent becoming dehydrated. However, this fluid does not have to be water. It can include milk, squashes, fruit juice, teas and coffee. Even alcoholic drinks like wine spritzers and gin and tonic can contribute to your recommended fluid intake.
To prevent dehydration, the volume of fluid is important, not the type of fluid. However, and it is a big however, high sugar drinks like soft drinks (such as Coke), fruit juice, smoothies and of course alcohol, are not only bad for your teeth, but if drunk frequently can cause weight gain because of the high calorie content. You can’t really go wrong health wise or weight wise with water, bottled, filtered or straight from the tap.
7. Healthy fats like sunflower oil and olive oil contain fewer calories than butter or lard
The only difference between fats like sunflower oils and spreads and olive oil and fats like butter is the type of fat they contain. Sunflower oil and olive oil tend to be high in healthy fats like polyunsaturates and monounsaturates whilst butter and fats like lard tend to be lower in these healthy fats and higher in unhealthy fats like saturates.
It is not the difference in calorie content that determines whether the fats are healthy or unhealthy, it is the different affect they have on cardiovascular health. Polyunsaturates and monounsaturates are good for cardiovascular health while saturates are bad for cardiovascular health.
Gram for gram, ‘good’ fat and ‘bad’ fat have the same number of calories, so sunflower oil and olive oil are equally as fattening as butter. The general recommendation, therefore, is that for a healthy heart you should aim to go for the healthier fats like sunflower spreads and oils and olive oil, and reduce the intake of saturated fats. Overall, for weight management, because of their high calorie content, you should use ALL fats sparingly and consume them in moderation.
8. Drinking ice cold water speeds up your metabolism
This is related to the idea that if you drink extremely cold water, your body has to burn calories warming it up. This may be technically correct but the number of calories burnt is so insignificant that you cannot put any reliance on drinking icy cold water to help you lose weight. So the advice would be if you like ice cold water then drink it, if you don’t, then don’t!
9. Low fat and reduced fat foods are virtually calorie free
We should first distinguish between low fat and reduced fat. Low fat indicates that the food contains less than three grams of fat per 100g/100ml. If a food is labelled as reduced fat, it means that the food must contain 30% less fat than that of a similar standard product, but this does not mean the product is low fat. For instance if a product is already very high in fat, a 30% reduction will still leave a high fat content.
In addition, foods labelled low fat and reduced fat are not necessarily low in calories as the fat can often be replaced with other ingredients like sugar to improve the taste and texture and, therefore, the product ends up being a low or reduced fat food but still has a high calorie content. Ultimately, weight loss is predominantly about calories.
10. There are some foods like grapefruit and cabbage that can help to burn fat and boost your metabolism
I believe this myth has been born from typical fad diets, like the Grapefuit Diet and the Cabbage Soup Diet, which has undoubtedly helped many people to lose weight. To put simply, no food significantly increases your metabolism to burn fat. The weight loss effect experienced by these dieters would have been down to the overall reduced calorie intake not the effects of the grapefruit or cabbage itself. A low calorie diet of any kind would have had the same effect as the grapefruit and cabbage soup diets.
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