Studies from the University of Nebraska found coffee has no diuretic effect in regular drinkers. The only exception is if you’ve never drunk coffee before, and you suddenly consume a mega dose of it (at least two to three cups) in succession.

Read: 8 reasons Why Coffee Is Good For You

Actually no. Prunes contain more – they actually have 27 different types of antioxidant – plus they are a powerhouse of minerals, containing potassium, magnesium, copper and iron.

Read: How Blueberries Might Help Improve Memory

Not necessarily true. Many dairy foods do not contain large amounts of lactose – for example, hard cheeses such as Parmesan, cheddar and Swiss contain virtually no lactose as most of is removed with the whey during the manufacturing process, say experts. Yoghurt too, is generally well digested as it contains bacteria that ferment the lactose.

Turkey contains tryptophan, which may help people fall asleep, but you would need to eat 18 turkeys for the effect to take place.

A new finding from the UK’s University of Cambridge shows that it’s the protein that positively affects the brain cells that keep us alert. The cells, called oerxin cells, send out electrical signals that make us more alert, but glucose from carbs actually blocks this activity – this is one reason, say scientists, why you feel sleep after a high-carb meal. However, protein stops this from occurring.

Dr Bruce Griffin at the UK’s University of Surrey, place volunteers on a two-egg-a-day, low-kilojoule diet for 12 weeks and found no rise in their cholesterol levels.In fact, as people lost weight on the plan it even went down.

Related: 10 New Reasons Why You Should Eat More Eggs

In recent years, a number of studies have found no link between dairy consumption and heart disease. In fact, milk and dairy consumption is associated with a small reduction in the risk of heart disease, stroke and diabetes.

Bread, cereal, pasta, rice and other grains play an important role in most peoples’ diets. They provide lasting energy, fibre and B-vitamins. The key is to choose high quality carbohydrates (whole, intact grains) most of the time. Save the refined stuff for occasional indulging.

Research from University of California has found that people who snacked on pistachios as part of a low-kilojoule diet lost more weight than those eating pretzels. Protein and fibre in nuts help to satisfy your hunger. In addition, the fat content in nuts helps release satiety hormones in the digestive system which curb hunger.

Actually studies have shown that an uncut watermelon kept at room temperature will double its levels of antioxidant beta-carotene and gain 20 per cent more of another antioxidant lycopene over two weeks than one kept in the fridge. Tomatoes, peaches and bananas also get more nutritious when stored at room temperature.

Text: Bauer/ Good Health/ Additional Reporting: Shenielle Aloysis