'Serious game-changers!' Over 50s can lose weight with vegetable that 'keeps your calories lower' - full list of best foods

The expert said: "Weight loss starts in the kitchen and fitness starts in the gym, and we need to focus on food and nutrition to lose weight.

"This is more important as we age. As we progress in years, our metabolism naturally slows down and there are certain foods out there that will help combat that."

She said that while it's impossible to "erase" this slowing metabolism, some diet changes can work wonders when it comes to weight loss.

Jenn told slimmers that adding 11 specific foods and one drink into your daily diet can reap major benefits.

These must-haves are leafy greens, fatty fish, avocado, prunes, egg, plain Greek yoghurt, barley, dark chocolate truffles, cruciferous vegetables, berries, beans, legumes and water.

Under 50 and want to lose weight? Jenn advised that 12 items are excellent for losing weight at any age.

Explaining the benefits of leafy greens, the weight loss guru said: "Leafy greens are one of the top weight loss foods over the age of 50."

Serious game-changers for weight loss over 50

1. Leafy greens
2. Fatty fish
3. Avocado
4. Prunes
5. Egg
6. Plain Greek yoghurt
7. Barley
8. Dark chocolate truffles
9. Cruciferous vegetables
10. Berries
11. Beans and legumes
12. Water

She encouraged slimmers to pick up some spinach, collard greens and kale. Jenn explained that these are low in calories, high in volume and filled to the brim with vitamins, nutrients and minerals.

Jen said: "Eating more vegetables will help keep your calories lower, give you health benefits and help you with a well-rounded diet as you age."

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Cruciferous veggies include broccoli, cauliflower, cabbage, kale, bok choy, arugula, Brussels sprouts, collards, watercress and radishes.

The expert explained that these are "rich in nutrients and fibre". Jenn said: "Fibre along with protein keeps you full. So if you're having these cruciferous vegetables as a side with protein, that is a power-packed filling meal."

In addition to veggies, there's another food group that slimmers should be stocking up on for real results.

Women in their 40s and 50s can lose weight "without cutting calories" by incorporating a food group into "every single meal and snack".