It’s well-known that your metabolism worsens with age.
But there are foods out there that can give your body a much needed boost to help you shift the pounds.
A nutritionist has today revealed the nine best products to keep your metabolism strong, from yerba mate to baobab.
Here, writing in a piece for Healthista, Rick Hay explains the science behind each of the foods and how they can help.
Matcha is a powdered version of green tea that is covered in shade cloths before it’s harvested bringing you a more potent version of the metabolism-boosting brew
1. Matcha green tea
‘One of the most highly researched fat burners is green tea,’ says Mr Hay.
‘Scientific studies show that drinking up to five cups of green tea a day can increase daily metabolism.’
Countless studies have shown green tea benefits metabolism.
Matcha is a powdered version of green tea that is covered in shade cloths before it’s harvested bringing you a more potent version of the metabolism-boosting brew.
In one study, done in 2014 at Penn State University, mice on a high-fat diet that consumed green tea extract and exercised regularly experienced sharp reductions in final body weight and significant improvements in health.
After 16 weeks, the high-fat-fed mice that exercised regularly and ingested green tea extract showed an average body mass reduction of 27.1 per cent and an average abdominal fat mass reduction of 36.6 per cent.
The mice on the green-tea-extract-and-exercise regimen also experienced a 17 per cent reduction in fasting blood glucose level, a 65 per cent decrease in plasma insulin level and reduction in insulin resistance of 65 per cent – all substantial improvements related to diabetic health.
Not bad for a humble cup of tea or five, right?
Yerba mate was also found that it could reduce levels of leptin, the hormone that signals hunger, often called ‘the obesity hormone’
2. Yerba mate
‘Yerba mate works on hormone levels and blood sugar to help balance out cravings and studies have shown it could have an anti-obesity effect,’ says Mr Hay.
Research done in 2012 and published in the journal Laboratory Animal Research found that this South American plant could lower fat levels in the blood of mice fed a high fat diet.
It was also found that it could reduce levels of leptin, the hormone that signals hunger, often called ‘the obesity hormone.’
‘When it comes to metabolism and weight loss, Yerba mate is extremely beneficial,’ says Mr Hay. You can take it as powder or tea.
3. Green coffee extract
The unroasted extract from the coffee plant, aka Green Coffee Extract has been shown to help arrest the absorption of glucose in the intestine.
A study published in 2011 in Gastroenterology Research and Practice said evidence was promising for the extract’s anti-obesity effect and more trials would confirm this.
Chlorogenic Acid is believed to be the main active ingredient in green coffee beans and the substance that produces the weight loss effects.
Unfortunately, straight up increasing your coffee habit won’t have the same effect as most of the chlorogenic acid is removed when the coffee is roasted.
4. Black pepper fruit
‘Black pepper fruit is a thermogenic spice which means it helps heat the body to burn fat and can also assist with the absorption of other nutrients,’ says Mr Hay.
A study from 2011 done on mice found that those fed a high-fat diet still lost weight when they were given supplements of black pepper.
Further research in 2012 published in the Journal of Agricultural and food Chemistry uncovered the way the spice might work for weight loss – by blocking the formation of new fat cells.
‘There’s a lot of research coming out about the fact that while kidney bean blocks carbohydrate absorption,’ says Mr Hay
5. White kidney bean
‘There’s a lot of research coming out about the fact that while kidney bean blocks carbohydrate absorption,’ says Mr Hay.
Taking white bean extract supplements 15 minutes before each meal led to a reduction in both weight and waist circumference compared to taking a placebo in a study published in The Journal of Applied Research in 2010.
A few other studies have shown similar results.
Actually a native Peruvian vegetable traditionally used as an aphrodisiac, Maca has also been shown to help endurance, which could benefit dieters who are exercising (which we hope, is all of you).
In fact, one study showed it increased sexual desire and performance in male cyclists.
While there is not a lot of evidence that it works specifically for weight loss, if you’re post-menopausal there’s a chance maca could prevent weight gain.
A 2009 study published in the Journal of Hygiene Research that investigated the potential of maca to reduce body fat in post-menopausal female rats that had their ovaries taken out found that the rats gained less weight when supplemented with maca.
Beetroot juice is used by Olympians pre- and post- exercise for both performance enhancing and muscle recovery benefits, thanks to a high proportion of its active ingredient, nitrate
In terms of athletic performance enhancers, beetroot has been hugely hyped in the last five years.
WHAT ARE THE TOP 10 WAYS TO BOOST YOUR METABOLISM?
From fidgeting and eating fat to starting the day with apple cider vinegar, a leading nutritionist and personal trainer outline the top 10 ways to boost your metabolism.
To kick start the fat-burning process, the experts recommend people start the day with a nutritious breakfast, such as porridge, to get the digestion going and help them feel fuller for longer.
Trainer Christina Howells also recommends combining high-intensity interval training with traditional cardio to really make the body work to burn calories.
Dietary changes could be as simple as switching your coffee for a matcha green tea, which, as well as being antioxidant rich, seriously boosts the metabolism, according to nutrition consultant Karen Cummings-Palmer.
In a piece for Get The Gloss, London-based Christina and Karen discuss the top 10 ways people can boost their metabolism to help them shed the pounds for good.
1. Eat in the morning
2. HIIT it
3. Make a matcha tea
4. Aerobic exercise
5. Apple cider vinegar
6. Individuality is key
7. Life is a gym
8. Fats and greens
9. Maximise your muscles
10. Move more and fidget
The juice is used by Olympians pre- and post- exercise for both performance enhancing and muscle recovery benefits, thanks to a high proportion of its active ingredient, nitrate.
Beet juice’s effects have been the subject of a series of studies by Andrew Jones of the University of Exeter in Britain who found that after taking it, athletes’ muscles were working more efficiently. It’s also been shown to help lower blood pressure.
They’re a pretty humble – and tasty – fruit.
But research has suggested that cherry juice could help reduce fat around the middle.
A study published in 2009 in the Journal of Medicinal Food fed tart cherries to a group of rats on a high-fat diet.
The researchers looked for changes in weight, inflammation and blood fats in one group compared to rats eating a high-fat diet without cherries in another group.
There was an association between tart cherry consumption and reduced body fat, especially belly fat, in the cherry-juice drinking group.
Baobab is an African superfruit that contains three times as much vitamin C as an orange.
Vitamin C not only helps with hair, skin and nails but also immunity and good immune function is important if you’ll be training, exercising or for any fitness or weight loss regime.
It’s also been shown to help keep blood sugar stable.
Scientists at the Oxford Brookes University’s Functional Food Centre published a study in 2013 in the journal Nutrition using healthy human volunteers, and measuring the rate of starch and sugar breakdown in their blood supply after they had eaten the baobab extract.
The researchers found that the baobab fruit extract significantly reduced the rate at which sugar was released into the blood supply of the volunteers post-digestion.
While further studies are needed, this early evidence suggests that baobab may help with the blood sugar fluctuations that can often leave dieters craving and reaching for sugary, processed foods that could sabotage their diets.
This article originally appeared on and has been reproduced with the permission of Healthista.