PORTION CONTROL‘Healthy’ snacks could be adding 300 calories to your diet a day – follow this handy guide and NEVER overeat again

YOU may be armed with the best of intentions, a snack draw brimming with "healthy" treats.

But with no understanding of portion control, you could be eating as many as 300 EXTRA calories a day, sabotaging your dieting dreams.

Popcorn may be a "healthy" snack, but eat too much and you'll still pile on the pounds. These portions reveal how much you should eat if you want to lose, maintain or gain weight

Here's how much oil you should be using in your cooking if you want to lose weight, left, maintain weight, middle or gain weight, right

Portion control could help you shed as many as 300 calories from your daily diet, experts say

The rise of the clean eating trend has given way to people opting for popcorn and whole foods like nuts, dark chocolate and nut butters in a bid to keep up energy levels between main meals.

But experts are warning these healthy snacks can still wreak havoc with your waistline.

This set of pictures, based on NHS guidelines, offers a handy visual guide to how much of your favourite healthy treats you should actually be eating.

And it reveals the best portion sizes depending on whether your want to lose, maintain or gain weight.