Is dark chocolate healthier than milk chocolate? 2 dietitians explain

 

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Lauren Ball, The University of Queensland and Emily Burch, Southern Cross University

Easter chocolate is all over supermarket shelves. Some people reach straight for milk chocolate eggs while others pause at the darker varieties, assuming they’re healthier.

Dark chocolate has gained a reputation as the “better” choice because it usually contains more cocoa and less sugar than milk chocolate.

But is dark chocolate actually healthier?

Let’s see how the evidence stacks up.

How do they compare?

All chocolate begins with the cocoa (or cacao) bean. Cocoa beans are the seeds of the Theobroma cacao tree, a tropical plant native to Central and South America.

Processing the bean gives you cocoa solids (the bitter part) and cocoa butter (the fat part that gives chocolate its smooth texture).

Chocolate is made from cocoa solids, cocoa butter and sugar. Milk chocolate also contains milk powder or condensed milk.

Dark chocolate typically contains a much higher proportion of cocoa solids, usually 50–90%.

Milk chocolate generally contains 20–30% cocoa solids, with the remaining bulk made up of milk ingredients and sugar.

How about nutritional benefits?

Because dark chocolate contains more cocoa solids than milk chocolate, it naturally provides slightly higher amounts of certain minerals.

This table shows the differences between milk chocolate (30% cocoa) and dark chocolate (more than 60% cocoa) per 20-gram serve. That’s about one row of a Lindt chocolate block.

As you can see, dark chocolate provides more minerals such as magnesium, iron and zinc. It also contains noticeably more caffeine (but far less than in a typical cup of coffee, which would contain about 100mg).

Milk chocolate offers significantly more calcium due to its milk solids, but it generally contains more added sugar.

Cocoa is naturally rich in plant compounds called polyphenols. These act as antioxidants in the body, helping to protect the body’s cells from damage.

Because dark chocolate contains more cocoa, it naturally contains higher levels of these compounds. In fact, dark chocolate contains roughly five times more flavanols (a type of polyphenol) than milk chocolate.

Compared to other foods often praised for their antioxidant content, cocoa contains around 17 times more catechins (another type of polyphenol) per serving than black tea. It also contains around three times more than red wine.

Does dark chocolate improve your health?

Research into cocoa and dark chocolate has produced some interesting findings, particularly about heart health.

Cocoa flavanols appear to help blood vessels relax and support better blood flow. Some clinical trials have reported small reductions in blood pressure and improvements in measures of blood vessel function after consuming cocoa products.

There is also broader evidence suggesting diets rich in flavanols may be linked with a lower risk of cardiovascular disease overall.

However, these findings come with important caveats.

Many of these trials use cocoa extracts containing high levels of flavanols. Others contain specially formulated chocolate rather than the typical chocolate bars or Easter eggs you’d find in supermarkets. The doses tested are also often far larger and far more concentrated than what people normally consume.

A large umbrella review (a review of reviews) involving more than one million participants did find links between eating chocolate and lower risks of cardiovascular disease, stroke and diabetes.

But the overall quality of evidence was rated as weak or very low, largely because many of the studies were observational. Observational studies can identify patterns, but they cannot prove chocolate itself caused those benefits.

The bottom line is that cocoa does contain beneficial plant compounds but the chocolate most of us enjoy is not a health supplement.

But I thought dark chocolate has less sugar?

Choosing dark chocolate doesn’t automatically make it the healthier option, especially where sugar is concerned. Some dark chocolate contains surprisingly high amounts.

Depending on the cocoa percentage and recipe, some dark chocolate products contain 40–50% sugar.

So a 150g dark chocolate Easter bunny containing 50% sugar, for example, can contain about 19 teaspoons of added sugar.

This applies to Easter eggs too. Some dark chocolate Easter eggs sold in supermarkets still list sugar as one of their first and main ingredients, ahead of cocoa butter. This means sugar makes up a significant chunk of what you’re eating.

So it’s always worth flipping the packet over and checking the ingredients list and nutritional panel to be sure.

What to choose this Easter?

Dark chocolate has a nutritional advantage over milk chocolate. But how much depends on the cocoa percentage and how it’s been made.

As a general rule, aim for 70% cocoa or more, and flip the packet over before you buy. In a higher-quality dark chocolate, cocoa should appear first in the ingredients list – not sugar.

A higher-quality dark chocolate might have its ingredients listed in this order: cocoa mass, cocoa powder, cocoa butter, sugar, vanilla.

A lower-quality dark chocolate might look like this: sugar, cocoa mass, cocoa butter, emulsifiers, flavour, milk solids.

If sugar is listed first, it’s the largest ingredient by weight.

Beyond that, choose chocolate you actually enjoy and watch your portion size. Remember that your overall diet matters far more than a few Easter eggs.

The real health benefit of Easter chocolate? The enjoyment of sharing it.

Lauren Ball, Professor of Community Health and Wellbeing, The University of Queensland and Emily Burch, Accredited Practising Dietitian and Lecturer, Southern Cross University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Read More........→October 17, 2026

7 of the weirdest things coffee does to your body

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Emma Beckett, Australian Catholic University

Coffee is best known, and perhaps most valued, for its caffeine and its ability to make us feel more awake and alert.

But coffee is much more than caffeine dissolved in hot water.

Coffee is a chemically complicated plant extract containing hundreds of bioactive compounds. These can have all kinds of weird and wonderful effects in your body, even when you’re drinking decaf.

Here are seven of the strangest.

1. Coffee can make you poo

One study shows about three in ten people say they get the urge to poo shortly after drinking coffee.

This happens quickly, and with both regular and decaf. So it’s down to more than just the caffeine. But it’s not clear exactly which coffee compounds cause this.

Your colon can also be more active in the morning, and this is when most people drink their first coffee.

What you add to your coffee can also affect your bowels. The lactose in milk or some sugar-free sweeteners can also get the bowels moving, particularly if you consume a lot.

2. Coffee can affect your reflux, eyes and ears

Coffee can worsen reflux symptoms for some people. Reflux, when your stomach acid flows back up into your food pipe, isn’t always just felt as heartburn. It can contribute to coughing, wheezing and other respiratory symptoms when reflux affects the throat and airways.

Caffeine can temporarily increase pressure inside the eye in some people with glaucoma or ocular hypertension, where pressure in the eye can already be high. Controlling this pressure is an important part of protecting the major nerve of the eye from damage. So some people with these conditions might be advised to limit their coffee and caffeine intake.

There’s also an ear condition where the tube connecting the middle ear to the back of the nose stays abnormally open, which can make you hear your own voice, or your breathing, unusually loudly. People with this condition, known as patulous Eustachian tube dysfunction, are sometimes advised to drink fewer caffeinated drinks and stay well hydrated, because dehydration can worsen symptoms. However, there is little direct evidence coffee itself causes the condition.

Caffeine’s relationship with migraine is complicated: caffeine can help relieve a migraine, but too much, or suddenly having less than usual, can trigger one in some people.

3. Coffee can interact with your medicines

Coffee can change the way some medicines behave in the body. For instance, it can reduce absorption of the thyroid medication levothyroxine and the osteoporosis drug alendronate.

Caffeine can slow the metabolism of the antipsychotic clozapine, increasing its concentration in the blood.

Sometimes medicines change the way your coffee behaves. For example, the antibiotic ciprofloxacin slows your breakdown of caffeine. So, your usual coffee may stay in your system for longer.

4. Coffee can affect your cholesterol

Coffee contains compounds called diterpenes. Two of these, cafestol and kahweol, can increase total and LDL (“bad”) cholesterol.

But in short-term trials, the same compounds lower lipoprotein(a), which may indicate a lower risk of a heart attack or stroke.

Other coffee compounds, including chlorogenic acids, may modestly lower blood pressure and improve blood vessel function.

So overall, it’s unclear what coffee means for markers of heart health.

5. Coffee may feed your gut microbes

You’re not the only one getting something from your coffee. Laboratory experiments suggest your gut microbes do too.

Some of coffee’s chlorogenic acids aren’t absorbed in the small intestine and reach the colon. There, microbes break them down into other compounds.

Coffee contains complex carbohydrates and roasting products called melanoidins that can reach the colon, where gut microbes can ferment them.

Small human studies suggest drinking coffee can also change the composition of the gut microbiome. But the evidence is still developing, so it’s too early to call coffee a prebiotic.

6. Coffee can influence your iron levels

Coffee can also limit how much iron you get from your food. Drinking coffee with a meal can substantially reduce the absorption of non-haem iron – the form found mainly in plant foods.

This isn’t primarily a caffeine effect. Polyphenols in coffee, including chlorogenic acids, can bind with iron in the digestive tract, making it harder to absorb.

This matters most for people who already have low iron stores or rely heavily on plant sources of iron, rather than being a reason for everyone to give up coffee with breakfast.

7. Coffee can kick-start the gut

Coffee can kick parts of your digestive system into action even when there’s no food to digest. It can stimulate the pancreas to release trypsin, an enzyme involved in digesting protein.

This happens with both regular and decaffeinated coffee, suggesting other compounds in your cup are talking to your digestive system.

Whether this digestive “heads-up” changes how hungry you feel isn’t clear.

Coffee can also affect gut hormones involved in appetite and fullness. But studies haven’t consistently shown whether this translates into eating more or less.

So, what does all this mean?

Caffeine and feeling more alert might be coffee’s most popular feature, but this is far from the whole story. Caffeine can do much more than that.

A cup of coffee contains hundreds of compounds that can interact with our digestive system, microbes, medicines, nutrients and more – sometimes in confusing and unexpected ways.

Emma Beckett, Senior Lecturer, Nutrition and Food Science, Australian Catholic University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Read More........→September 16, 2026