"Yoghurt can be a great form of calcium, which many women need, but generally the sweetened options in the shops aren't as good for you," she said.
Instead, try the unsweetened or Greek full-fat varieties and flavour them with nuts and fruit.
Cohen advocates reading the ingredients list whenever you're not sure how much sugar is in something, and being aware that many companies will use multiple words for the word sugar:
"Molasses, glucose, syrup and more are all words companies use for sugar. Beware!," she says.
Cereals
For decades, cereals such as muesli, cornflakes and rice puffs or bubbles have been the staple of many people's breakfasts.
However, when it comes to what they do to your waistline, the facts may force you to think twice.
"If you're going to eat cereal, I recommend wholegrain versions such as All Bran, Sultana Bran and dry toasted mueslis,' Cohen says.
A good test of whether or not your cereal is healthy is to see how quickly it dissolves in your milk.
"Dry toasted mueslis generally come without added sugars and are much better for your health."
Cohen says your safest bet is porridge, which can be sweetened with fruit and nuts.
"Naturally occurring sugars are good for you," she says.
Pastries
Most people know pastries such as croissants and pains au chocolat aren't the healthiest choice when you first wake up, but that doesn't stop so many of us reaching for them when we order a coffee in a cafe at 8am.
"Pastries do very little for your health apart from taste good," Cohen says.
"While I don't call any foods 'bad', I do think these should be seen as weekend treats rather then everyday foods."
Wholegrain toast paired with boiled or poached eggs, spinach and avocado are much better morning shouts than porridge.
Even better, they should keep you full until lunch, too.
Cereal bars
According to many nutritionists, cereal bars bought from the shops are to be avoided at all costs.
Packed with sugars, artificial sweeteners and bad things, they seem like a quick fix, but they're anything but.
"I stay away from the snack-bar aisle and breakfast bars in general as while it is possible to get it right, it's pretty difficult," Cohen says.
"I'm a big fan of a banana and some nuts; just as convenient, but much better nutritionally."
It's also worth avoiding breakfast drinks such as fruit smoothies and juices if they don't fill you up, as you'll just consume more later anyway.
"In general, I believe if you can find ways to have veggies at breakfast, then you're doing well," Cohen says.
"Bizarrely, I love chickpeas in the morning!"
To read more from Lyndi Cohen,visit her website here.
