Weight Loss Myth No 2

Weight loss myth number 2
If you eat a diet low in fat, you’ll lose fat and won’t be overweight.  It’s an assumption we all make, and with the supermarket shelves piled high with ‘Low fat’, ‘light’ and ‘0%’, it’s easy to get drawn into the hype.
So what fuelled this paradigm?  It seems to make perfect sense until you realise that obesity and heart disease are on the increase, and this low fat diet we’ve been following for decades appears to be having the opposite effect.

It was in the seventies when the research was carried out claiming a high fat diet leads to coronary heart disease, hence the birth of the low-fat craze in the early eighties that has been with us ever since.  But this research was flawed, not analysed properly, and has led us all astray. 

The research was based on LDL (low density lipoproteins, aka ‘bad cholesterol’) levels in the body.   Here’s what it concludes:
In the mid seventies they discovered that dietary fat (A) raises LDL (B):
   A → B
In the late seventies it was found that LDL (B) levels correlated with cardiovascular disease (C):
   B → C
So therefore, dietary fat leads to heart disease:
   A → C
Right?  

Wrong.  Here’s why:
There are two types of LDL that can currently only be tested as one:

1. Pattern A, large, buoyant LDL that floats through the bloodstream and doesn’t stick to your arteries (neutral)
2. Pattern B, small, dense LDL, which starts the plaque formation that causes heart disease (bad).

You have to look at the ratio of HDL (high density lipoproteins) to triglycerides (other fatty substances) to determine if the LDL you have is bad or neutral – low triglycerides to high HDL is considered good, high triglycerides to low HDL is considered bad. 

So what causes these different types of LDL to rise?   Pattern A is affected dietary fat, pattern B is affected by carbohydrates. 

And then what happened?   The American government started a campaign to reduce the amount of fat in the diet from 40% to 30%, and in true British style, we followed.  And achieved it.   But by reducing the fat in food, you also reduce the flavour, and it becomes unpalatable.  So to make it taste nice (and therefore sellable), food manufacturers added sugar, and sweeteners.   And what’s sugar?  A carbohydrate. And what do carbohydrates do?  Increase the bad form of LDL.   So we were doubly duped!
Click here for my previous article on sugar.  Sweeteners are just as, if not more evil than sugar – don’t get me started on them!   

Now I’m not proposing you give up all carbohydrates and eat bacon for the rest of your days, it’s all about finding out what’s right for your body.  Listen to it, it will tell you.  Feel bloated after bread?   Don’t eat it.  Get heartburn after fatty food?  Stay off it.   These are just a couple of examples of your body telling you it doesn’t like what you’re giving it.  And then of course there are my general guidelines such as avoiding sugar, exercising, eating whole, unprocessed foods, lots of fruit and veg and being happy.   Simples.

Weight Loss Myth No 1.

Weight loss myth number 1

You’ve all heard it – to lose weight you need to burn more calories than you take in.   Sounds like simple maths to me.  But have you ever actually worked out what that means in real terms?

An average woman may eat 2000 calories (give or take) per day and weigh 10 stone.   If she were to run a mile in 10 minutes, she’d burn 106 calories (nearly 2 Oreo cookies’ worth).   At that rate, she’d have to run 20 miles per day to burn just 120 calories more than her daily intake (2120 calories in total).  That’s 3 hours and 20 minutes of running.  Who’s up for a marathon today then?!!!

So if that’s the case, what’s the point in exercising at all?   It does help you lose weight, just not in the way you may have thought.  As you exercise, your metabolism is increased (by improving your insulin sensitivity in your liver & skeletal muscles), and it’s this that helps you burn more energy, more efficiently.   An increase in insulin sensitivity also reduces the rate of diabetes, along with high blood pressure, heart disease and bone loss.

The best reason though, I think, for exercising is because it makes you feel good.    Those wonderful happy hormones, endorphins, are stimulated when you exercise, leading to a feeling of exhilaration and wellbeing.
It’s also a great stress buster.   I remember as a child watching people playing squash, and wondering why they hit the ball so hard and made such a noise!  Now I realise they were probably imagining the ball was their boss’ head…   Ever wondered why people pace the room or tap their fingers when they’re tense?   Movement helps to relieve the primitive ‘freeze’ response to stress, and not forgetting those happy hormones giving you an extra anti-stress boost.

Even a professional marathon runner wouldn’t run 20 miles every day, and look how skinny they are!  So how does it become achievable and sustainable in everyday life?   The current NHS “Recommended activity levels:

• Adults: 30 minutes of moderate-intensity physical activity at least five days a week.
• Children: 60 minutes of moderate-intensity physical activity each day.
• Targets can be achieved with 10-minute bursts of activity spread throughout the day.”

‘Moderate-intensity’ exercise means getting a bit out of breath, so you feel that warm glow as the blood (and endorphins) pump through your body.   It’s the ten minute bursts that entice me, as it means I can do a spurt of vigorous vacuuming before work (the sooner it’s over and done with the better if you ask me), go for a quick power walk at lunch, and when I get home, I can dance to a few tracks via the Xbox Kinect.   Bob’s your uncle, 30 minutes of ‘moderate-intensity physical activity’ done.   It really helps your motivation to find something you enjoy doing, so you keep wanting to go back for more.  My favourites include dancing, walking and horse riding.  What are yours?