Science Catch-up. Sugar Bingeing Like Drug Abuse

500ml cola has 12 teaspoons of sugar_over twice the advised limit_The Health Sciences Academy

by Alejandra "Alex" Ruani — Get free science updates here.

Welcome to our Thursday’s Science Catch-up: curated links by The Health Sciences Academy. Get our email updates every other Thursday here (it’s free).

Let’s catch you up with studies and news that recently made the headlines!

Click on your favourite topics to read our summary:

1. Sugar bingeing like drug abuse

2. Children of late moms do better

3. Want to live long but also keep your memories? Get moving!

4. Blueberries for depression

5. Fast food exposes you to harmful phthalates

6. Saturated fat promotes metabolic disorders?

7. Eat what you can sweat: ‘Exercise’ icons on food labels proposed
 

Sugar bingeing like drug abuse

Study link

We already know that sugar sets in motion a strong reward mechanism in the brain, which can lead to addiction and dependence. But this new study takes things a step further.

Neuroscientists discovered that long-term sugar overconsumption changes the morphology of brain cells (i.e. their shape and size!) in a similar way that hard drugs do, such as cocaine or morphine.

These brain-cell alterations are really concerning if we consider how difficult it can be to wean someone off an addictive substance! In this case, sugar.

The types of sugar to keep an eye on are “free sugars”: those that your body absorb faster, added to foods and drinks, or naturally present in honey, syrup, and unsweetened fruit juices (this includes your freshly-squeezed orange juice!). The advice is to limit “free sugars” to less than 25 grams a day (so make sure to check labels!)

Here’s a chart with the world’s biggest sugar eaters by country. The amounts are huge:

Worlds Biggest Sugar Eaters_By The Health Sciences Academy_Where people eat the most sugar

 

Children of late moms do better

Study link

Very encouraging news for late moms.

Researchers found that when mothers delay having a baby to older ages, even at 40 or onward, they have children who are taller, have better grades in high school, and are more likely to go to university.

During my genetics research at Harvard, I learned that in the corporate world, around half of women have their first baby after the age of 40. Not before.

The thing is that millions of women are still being told to get pregnant a decade or two earlier than that. However, that fear is based on old statistics from the 1830’s, a time before electricity and antibiotics!

So, where are we now in terms of stats?

99% of foetuses are chromosomally normal among 35-year-old pregnant moms, and 97% among 40-year-olds. At the age of 45, 87% of foetuses are still normal.

For that reason, I’m excited to announce that we are currently developing our Advanced Fertility Nutritional Advisor course. If you’re interested, we’ll make sure you’re on top of our list when we make the announcement. Click here if you wish to be notified when it is released.

 

Want to live long but also keep your memories? Get moving!

Study link

Besides cheering you up, moving your body can protect your brain and keep it sharp. Scientists tracked the physical activity and memory function of 876 participants, over a period of 10 years. They also measured their brain volume via repeat 3D brain scans (MRI) during this time. That’s a lot of people to put in a scanner, making this study very special.

They found that physically-active participants had substantially more grey matter (i.e. more neurons) in brain areas related to memory and higher-­level thinking, compared to the less active participants. This is correlated with greater brain health, and a lower risk of memory loss later in life.

MRI Brain Scans_Physical Activity Can be Neuroprotective_The Health Sciences Academy_Raji 2016

A) Red and yellow colours reflect larger grey matter volumes in the frontal, temporal, and parietal lobes with physical activity. B) Main effect of physical activity in the hippocampus.

 

Blueberries for depression

News link

I thought this was worth mentioning. A number of experiments (using animal models) indicate that eating blueberries might help reduce the genetic and biochemical drivers behind depression and suicidal tendencies associated with post-traumatic stress disorder.

It’s thought that this could be thanks to the antioxidant and anti-inflammatory actions of the phytochemicals in blueberries. They may help counteract the increased oxidative stress and inflammation in the brain during a prolonged stress response.

 

Fast food exposes you to harmful phthalates

News link

Phthalates (pronounced THAL-ates) are plasticisers used to make food packaging, tubing for cheeses and sausages, and fast food containers. They have been linked to metabolic disruption and weight gain. The problem is that they can leach out of plastic packaging and contaminate processed foods, getting into your body.

This survey involving 8,877 participants suggests that those who ate the most fast food had phthalate levels that were as much as 40% higher. Another good reason to keep junk-food consumption to the minimum, wouldn’t you agree?

 

Saturated fat promotes metabolic disorders?

Study link

Cheese, butter, meat, coconut oil… they all have saturated fats: the type of fats that have been feared by heart doctors for decades. Although saturated fats have been “partly” exonerated, the  debate continues. New research explains why saturated fats aren’t as innocent as many are beginning to believe.

The findings show that consumption of palmitate (a saturated fatty acid abundant in animal products and palm oil) can shift peripheral body clocks to a different rhythm, promoting inflammation and metabolic disorders.

 

Eat what you can sweat: ‘Exercise’ icons on food labels proposed

News link

An article published in the British Medical Journal argues that food should be labelled with the exercise needed to expend its calories. The author, Shirley Cramer (Chief Executive at the Royal Society of Public Health), believes that giving consumers an immediate reference between the calories in food and physical activity could help them change their eating behaviours and hopefully reduce obesity risk.

In her article, she explains that tiny symbols could show the calories to be expended from different activities against the calories in the product.

Although it sounds like an interesting concept to get people more active (or to eat less energy-dense foods), it might take ages to implement something like this. We don’t even have sugar spoon icons on sugary drinks yet! Which I think are a priority, labelling-wise.

For example, 500ml of cola has as many as 12 teaspoons (54 grams) of sugar, over twice the daily limit in just one drink! But most people may not know that, including your family and friends. So before a loved one picks up that bottle of cola again, show how much you care by sharing this with them.

500ml cola has 12 teaspoons of sugar_over twice the advised limit_The Health Sciences Academy

 

 

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What has inspired you this week? What are your thoughts on some of these topics? Leave a comment and let us know!

The-Health-Sciences-Academy-Alejandra-Ruani-small1-right
Alex Ruani leads the research division at The Health Sciences Academy, where she and her team make sense of complex scientific literature and translate it into easy-to-understand practical concepts for students. She is a Harvard-trained scientific researcher who specialises in cravings and appetite neurobiology, nutrition biochemistry, and nutrigenomics. Besides investigating and teaching the latest advances in health and nutrition science, Alex makes it easier to be smarter with her free Science Catch-ups every other Thursday.
Connect with Alex via email.


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8 Comments

  • Umama

    Reply Reply April 21, 2016

    I like all topics but I am inspired by does excluding gluten make you weight gain .on this topic I will tell you that the major problem from gluten is cealic disease it is treatable from gluten free diet

  • Claudia

    Reply Reply April 21, 2016

    The “older Mom” article got me thinking. It tends to be, as the article mentioned, intelligent women maybe those who had a better start in their lives including opportunities, healthcare, and nutrition that are marrying later and having children beyond 40. These women may not have the perfect window for optimal egg health, but what they have on their side may be healthy genetics, better care, and the ability to research healthy practices before and during the pregnancy i.e. the ability to afford organic fruits and vegies, grass-fed meat, etc.
    We need to look at the results reported above from all angles. These women might have had even healthier babies had they tried earlier armed with all these positive factors.

  • Samantha Cheshire

    Reply Reply April 21, 2016

    Very interesting articles. I found the amount of sugar which is added in cola very shocking. Certainly there is a lot of thought provoking information given in today’s catch up. Thank you.

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