Lose weight at any age

While it is true that weight loss can become more challenging as we age, it's far from a lost cause.

Revitalise Australia dietitian and nutritionist Jo Beer explains our metabolic rate slows as we get older but if our diet stays the same, the weight can start to creep up.

"As we age, we also lose lean tissue and it starts to get replaced with fat tissue," she says. "This generally happens for women in their 40s and for men in their 50s or 60s."

Vivid Health and Fitness founder Jennifer Birkhead says it's important not to let this become an excuse.

"Most people simply aren't as active as they get older, which in turn leads to less fuel being used and people rarely reduce their fuel intake to compensate," she says. "Also when we are less active, it usually leads to less lean muscle mass which can affect our metabolism."

Mrs Birkhead recommends making a few simple changes to get your weight back on track.

"Eat a varied diet of wholefood with an abundance of vegetables and limit processed food," she says. "Find a way you like to move and do that as often as you can. Drink plenty of water and surround yourself with supportive people who are health conscious."

Atlas Performance founder and trainer Sean Connolly says lifting weights is crucial for fat loss.

"Even though the scales may not move, you'll be fitting into small jeans by lifting barbells and dumbbells," he says.

Mr Connolly reveals eating protein for breakfast is another trade secret.

"Spiking insulin first thing in the morning will help you become a fat-storage machine," he says. "Good protein and smart fats in the morning are much better for fat loss."

Also don't be afraid to take supplements.

"Food quality today is not as good as it was in the past, so taking multivitamins, zinc, fish oil, magnesium, vitamin D3 and probiotics are a staple for many Atlas Performance clients," Mr Connolly says. "A lean and strong body is both the product of good health and a strong gut and digestive system."

Ms Beer says no matter your age, the first step of weight loss is having a realistic goal.

"With (TV shows) like The Biggest Loser we find people start expecting to lose weight very, very quickly. I also think it is important to understand why they want to lose weight and why they put it on."

If you want to lose weight, Ms Beer says the most important thing is to be honest with yourself.

"We all generally know deep down where we are going wrong; we just have to wise up to it and be honest about it."