Tag: tuesdaytip

Tuesday Tip

Tuesday Tip: Fat Burners – Fact or Fallacy?

Dr Nancy P

Tuesday Tip: Fat Burners – Fact or Fallacy? 💊

Fat burners – you’ve seen them on social media, you know people taking them, you may even have taken them yourself. But do they work and are they worth the money? I’ve talked about this before but with gyms still closed and people looking online for quick fixes I’ve seen an increase in these things for sale.

Fat burners are combinations of food based natural or chemical products which claim to burn fat/increase metabolism. Common ingredients include caffeine, green tea extract, green coffee extract, ginseng, pepper, capsicum etc. More dangerous ingredients include bitter orange, yohimbine, garcinia etc (linked to risk of stroke, heart attack). They claim to increase fat oxidation, induce thermogenesis, affect fat burning hormones/enzymes, etc. In reality they do none of that.

They increase metabolism slightly, in the short term (increasing heart rate) but in terms of increasing BMR i.e. calorie burn at rest, which is what is needed to burn more calories (and hence fat), the effect is negligible. A 2017 study found an increase of 65 cals in BMR. This is a tiny increase over the day and won’t lead to increased fat loss. Green tea extract has been shown to increase fat oxidation (i.e. fat burnt by the body) BUT this only leads to fat loss IF you are in a calorie deficit, as fat stores are simply restored the moment you eat. Another study in the Journal of the International Society of Sports Nutrition found no difference over 6 weeks between fat burners and a placebo in fat loss (or muscle mass).

There is limited evidence that SOME fat burners MAY reduce hunger, but they’re linked to gastrointestinal distress so not a great option and again a study in the journal “PLoS one” found that coffee has exactly the same effect on exercise performance and endurance (i.e. an instant coffee an hour before you workout).

Bottom line – if someone is selling you fat burners stop, think and reconsider. Aside from the potential health risks, you’re throwing money down the drain. Make yourself a coffee or green tea and enjoy the same effects with less risk for less money.

Happy Tuesday 🤗

Xx

Tuesday Tip

Tuesday Tip: Diet Drinks

Dr Nancy P

Tuesday Tip: Diet Drinks 🥤

Are diet drinks bad? This is something I hear a lot and there seems to be a lot of concern out there over drinking zero or low calorie soft drinks. So I thought I’d address them today.

Proponents of the “diet drinks are bad” message often claim that the sweetener in them, aspartame, causes cancer. In fact there is no scientific evidence that aspartame causes cancer (or any disease). One study, on rats, found a possible link to blood cancers, but the largest study on humans found no link at all.

Others claim that diet drinks cause obesity. Obesity is caused by consuming excess calories, but diet drinks contain no calories so they can’t possibly cause obesity. They can’t work against the laws of thermodynamics!

Then there’s the people that say it must be bad because you can clean a coin/ silver etc with Diet coke…erm.. well what it does to your body is not the same as what it does to a coin. You can clean a coin with lemon juice/vinegar etc yet people consume those without question. Some argue that it negatively affects gut health but as the gut doesn’t have much involvement (there is nothing to be absorbed) this isn’t the case. Studies have only shown an impact with extreme consumption (we’re talking over 8 litres per day every day).

Finally the most recent claim is that the diet drinks “trick” your brain into thinking you’ve had sugar and therefore causes an insulin response (which then causes you to eat more sugar). This simply isn’t true – insulin isn’t released unless sugar is present, no calories, no sugar – no insulin response.

Some people are sensitive to aspartame (just as some people are sensitive to a range of foods) and obviously if it doesn’t agree with you then clearly don’t have these drinks. But zero calorie drinks can be a really helpful way to replace a calorie dense soft drink with something of similar taste but no calories, so can really help aid fat loss. In addition (as per last week) they contribute to the volume of things being consumed and help to keep you fuller longer.

So consuming diet drinks in moderation (a few cans a day or so) is perfectly ok!

Happy Tuesday 🤗

Xx

Tuesday Tip

Tuesday Tip: More Volume, Fewer Calories

Dr Nancy P

Tuesday Tip: More Volume, Fewer Calories 🍿

Following on from last week’s tip one really good way to help control appetite is to focus on food volume. Recent studies have shown that its the volume of food you’re eating that matters more than the actual calorie content.

In one study participants were given a smoothie, one group had a small one, the other a larger one. Both contained the same number of calories, but the larger one had greater volume as it contained more air. The group that had the larger one ate far fewer calories for the rest of the day – between 12 and 30 percent less! Similar studies have tested it with yoghurt-based meals, soups and normal shakes and all have shown the same results; those who had the meal with greater volume consumed fewer calories and were less prone to overeating for the rest of the day.

In another study they provided participants with soups for lunch over the course of several weeks. When they gave the group a soup that was greater in volume but with the same amount of calories, the participants felt fuller faster and ended up eating fewer calories in that sitting. When they kept the volume the same but increased the calories in the soup the participants ended up eating more calories over all and took longer to feel full.

So basically this shows that food volume can be very important when it comes to controlling appetite and hunger. So what does this mean in practice? There are a few tips you can use to feel fuller quicker – if you have smoothies or protein shakes etc for breakfast allow them to blend for 5 mins longer than usual. This will increase the volume and amount of air in the smoothie. Go for foods that full of air; snacks like rice cakes or low calorie popcorn (high fibre and high volume, but relatively low calories) are brilliant, even zero calorie carbonated fizzy drinks are a great way to help you feel full. Whipping up food also helps; you can whip 0% greek yoghurt and add fruits, or add herbs and spices for a dip. Fruit and vegetables in general are filling as they contain more fibre, water and air so eat those first and include them in your snacks too.

Happy Tuesday 🤗

Xx

Tuesday Tip

Tuesday Tip: Tackling Hunger

Dr Nancy P

Tuesday Tip: Tackling Hunger 🍔

With the current lockdown many are finding it hard to manage their diet, and specifically their hunger.

So how can we try to manage this?

First off is it true hunger or emotional hunger? True hunger starts gradually, is satisfied by any food and will end when you’re full. In addition you’re less likely to feel guilty afterwards. Emotional hunger comes on suddenly, in a state of heightened emotion (e.g. stress or anxiety) or boredom. It typically involves craving specific foods, not being satisfied once full, eating mindlessly and feelings of guilt.

If it’s true hunger there are a few things you can do to help manage it. Studies have shown that higher protein meals reduce perceptions of hunger, particularly when combined with fats. Low calorie, high fibre foods are also important (fruit and veg); it increases “bulk”, causing stomach wall expansion, triggering the release of satiating hormones (fullness hormones). Another great option is low/zero calorie carbonated drinks which can help curb sugar cravings, and create that sensation of fullness. Caffeine is also an inhibitor of hunger in small amounts.

 

Emotional hunger is harder. Many foods give us “good feelings” but these foods are calorie dense and often high in sugar/saturated fat. They can provide temporary escape from boredom, low mood, stress etc but can leave us feeling worse and promote a negative relationship with food. We eat because we feel bad and we feel bad because we eat. Identifying the triggers/situations where you tend to emotionally eat is vital. Once you identify the triggers you can produce a list of replacement activities. Actually write out some alternatives and display them e.g. take 3 deep breaths, drink a big glass of water, play with your dog/cat, do some exercise/stretches. listen to music/podcast, do a 60 sec household chore, call a friend, adult colouring/jigsaw etc.

Be kind to yourself, the lack of stimulation, reduced human interaction and increased anxiety as a result of lockdown is natural. So if you are emotionally eating that’s ok – if you want to reduce it though then try these tips for starters.

Happy Tuesday 🤗

Xx

Tuesday Tip

Tuesday tip: Skipping to Fitness

Dr Nancy P

Tuesday tip: Skipping to Fitness 🏃🏼‍♀️

With gyms closed we’re all having to workout at home (or outside) but as the weeks go on motivation can wane. Having just had Easter too you may, like me, be feeling like you need to do some exercise. If you can’t face long home workouts or don’t have time with home schooling/ work etc then I have the perfect solution!

This is one of my favourite cardio exercises (as many of my PT clients will already know!) – skipping! It’s cheap, easy to do and can be done almost anywhere – and it’s really effective too! As well as being great for improving cardiovascular fitness, it is also great for helping to recruit and increase fast twitch muscle fibres to keep you agile, and improves balance and coordination . Studies have shown it is as effective as a 45 minute run in improving fitness and fat burning. And contrary to what you might think If done properly, skipping is lower impact on the joints than jogging or running. However, it does require the correct technique – light 2 footed jumps on the balls of your feet, only a couple of cms off the floor. This amount of impact is enough to support healthy bone density and prevent osteoporosis but not enough to stress the knees, ankles and hips too much.

And even better, a recent study by the Waseda University in Japan discovered that participants who took part in ten mins of skipping a day experienced a drop in appetite (compared to those who did nothing or did other cardio exercises such as cycling and running). It turns out that the up and down movements from skipping actually cause less ghrelin (the hunger stimulating hormone) to be produced by the gut. So you end up feeling less hungry – which means you will tend to eat less! Ideal for lockdown eh?

Try 2 min blasts now and then through your day.

Happy Tuesday 🤗

Xx