So only one year after moving in to our new home, we are considering building an extension. Not for another baby, not for my shoes but rather to house the 900 green bags I have now brought home from Lindo's. While I am an avid supporter of the green initiative, it's taking me a while to get myself together and into the habit.

So far, I have forgotten to take them back every single time which means that I now have bags EVERYWHERE except in the car where I need them. At some point, I'm sure that going green will become a matter of habit — just as I hope that the ideas I give you here will eventually sink in! Often we need to hear a message over and over again before the information finally hits home, so I'm unashamedly continuing on my crusade against the big dietary offenders.

From a nutritional standpoint, there's really nothing worse than something that is high in both saturated fat and sugar. The problem is that most of our junk-food snacks — especially candy bars and cookies — are high in both. As the weather gets even hotter, ice-cream becomes a serious temptation too, but you have the option to do some good damage limitation here!

If you look at the chart below, you'll see that the fat content of the Haagen Dazs ice-cream is sky high. Just one small serving contains 16g of total fat, of which 10g is the especially bad, saturated fat. The Haagen Dazs also has the highest sugar content, a high cholesterol content and at 280 calories a pop, it will take you well over half an hour to jog it off! All in all, it's a nutritional no-no.

However, if you are an ice-cream fan, keep a look out for frozen yoghurt versions of your favourite flavours. As you can see, although the sugar content is still significant, the Stonyfield Farm frozen yoghurt is extremely low in fat. Ben & Jerry's also do some great frozen yoghurt flavours (including an amazing Chocolate Fudge Brownie) and both companies aim to make their products as natural as possible.

On the all-natural front, this Raspberry Ciao Bella sorbet is a clear winner. Whilst many frozen desserts have a long list of dubious ingredients, this sorbet is naturally fat-free and only contains raspberries, sugar and water. That's it. Remember, I'm not advocating sugar here but I am suggesting that if you do have an icy treat, try and pick something that isn't high in both fat AND sugar.

Another tip is to serve your sorbet, frozen yoghurt or ice-cream in a ramekin or cone — this keeps the servings size small and prevents you from eating the whole tub! Finally, when making healthier choices, always read each and every label. The brands vary enormously within their product range, so don't rely on one being consistently best.

The advice given in this article is not intended to replace medical advice, but to complement it. Always consult your GP if you have any health concerns. Catherine Burns is a fully qualified Nutritional Therapist. She can be contacted at clinicalnutrition@gmail.com