Inflammation
Mixed evidenceA cocoa-extract trial lowered hsCRP but did not improve every inflammatory marker. This does not establish an anti-inflammatory effect from ordinary chocolate. [3]
Read the factor explainerFood index
Dark Chocolate: Nutrition, Cocoa Evidence and Practical Portions
Enjoy dark chocolate as a food, not a daily treatment. Cocoa flavanols can support normal blood-vessel dilation, but cocoa percentage does not tell you the flavanol dose. [1]
Updated
Nutrition information
Dark chocolate varies by recipe and cocoa content. Use your chosen bar's current nutrition label and the portion you actually eat. Cocoa percentage alone does not establish sugar, fibre or flavanol content.
Dark Chocolate and the health factors
Cortisol
Not establishedA small study tested specially prepared chocolate before laboratory stress. It does not establish an evening dose or lasting cortisol benefit. [4]
Read the factor explainerGlucose
Not establishedCarbohydrate amount and portion size matter. Cocoa percentage alone cannot predict your blood-glucose response. [5]
Read the factor explainerGlycaemic Load
Not establishedGL combines GI with available carbohydrate in a serving. Without a relevant GI result and verified composition, a precise value is not established. [5]
Read the factor explainerWhat cocoa research actually shows
The often-quoted 200 mg daily amount concerns normal blood-vessel dilation. EFSA assessed high-flavanol products, not a universal 25 g portion of 70% chocolate. [1]
Bean origin and processing affect flavanol content. A higher cocoa percentage is not proof of a higher measured flavanol dose. [1]
In COSMOS, cocoa extract did not significantly reduce the original primary cardiovascular outcome. Cardiovascular deaths were lower as a secondary finding, not proof of a retail-bar benefit. [2]
The factor labels are educational summaries, not measurements of your hormones, inflammation or glucose. Extract and laboratory studies do not establish a treatment dose of chocolate. [3] [4]
Choosing a bar and planning a portion
Try 70% or higher if you enjoy a stronger cocoa flavour, but do not treat it as a health threshold. Cocoa percentage does not verify flavanol content. [1]
Compare sugar and energy per 100 g on the packs, then choose a bar you enjoy. Compare price per 100 g rather than assuming a particular brand offers better value.
Try weighing 20 to 25 g once rather than assuming two squares. Check its energy on the pack and adjust to your needs. This is a portion-planning example, not a therapeutic dose. [7]
Put the portion on a plate and put the bar away. Adjust the amount or frequency to suit your needs rather than treating a daily serving as a rule. [7]
Read nutrients for the portion you actually eat, not just per 100 g. This page does not provide a verified generic or brand-specific nutrient panel.
Timing, caffeine and enjoyment
Choose a time that suits you. Acute stress research does not establish that evening chocolate improves cortisol control, serotonin or sleep. [4]
Chocolate contains caffeine, and amounts vary. If you notice poorer sleep after eating it late, try an earlier time or a smaller portion. [6]
Pair it with a caffeine-free herbal tea if you enjoy the ritual, without expecting a hormonal benefit.
Where it fits in an Inception programme
If you enjoy dark chocolate, nutrition coaching can help you plan a portion around your usual meals, preferences and goals. It need not be prescribed or eaten every day.
For Longevity Programme members, discuss how chocolate fits alongside berries and other plant foods. Treat it as an optional food choice, not a proven anti-ageing combination.
Dark Chocolate versus
- Dark Chocolate vsBlueberries
These foods need not compete. Try a little chopped dark chocolate with blueberries rather than treating either as a substitute for the other.
- Dark Chocolate vsMānuka Honey
Choose by how you plan to use them: chocolate as a treat, honey to sweeten a dish. Avoid treating either as a daily medicine.
Common questions about Dark Chocolate
- What percentage cocoa should I buy in NZ?
- Try 70% or higher if you enjoy it, but it is not a health threshold. Compare sugar and energy on the pack. Cocoa percentage does not tell you the flavanol dose.
- How much dark chocolate can I eat daily on a fat-loss plan?
- There is no universal allowance. Try 20 to 25 g as a portion-planning example, check the pack's energy value, and adjust to your needs. It is not a flavanol dose or a guarantee of fat loss.
References
- 1.EFSA. Scientific Opinion on cocoa flavanols and maintenance of normal endothelium-dependent vasodilation.
Supports the 200 mg amount for blood-vessel dilation. Does not establish the flavanol content or clinical benefits of an ordinary chocolate bar.
- 2.Effect of cocoa flavanol supplementation for the prevention of cardiovascular disease events: the COSMOS randomized clinical trial.
Tested standardised cocoa extract in older US adults. The original primary cardiovascular outcome was not significantly reduced; lower cardiovascular mortality was a secondary finding.
- 3.Effects of 2-year cocoa extract supplementation on inflammaging biomarkers in older US adults: findings from the COSMOS randomised clinical trial.
An extract study found lower hsCRP, increased interferon-gamma and no significant change in other measured markers. It does not establish benefits from retail chocolate.
- 4.Dark chocolate attenuates intracellular pro-inflammatory reactivity to acute psychosocial stress in men: A randomized controlled trial.
Studied 65 healthy men given specially prepared chocolate before laboratory stress. Acute findings do not establish evening timing, lasting cortisol control or sleep benefits.
- 5.University of Sydney Glycemic Index Research Service. FAQs.
Explains GI, glycaemic load and influences on glucose response. Provides no verified GI or GL for the chocolate products discussed.
- 6.EFSA. Caffeine.
Describes variable caffeine content in foods and possible sleep effects. Approximate chocolate values are not product-specific measurements.
- 7.NIDDK. Food Portions: Choosing Just Enough for You.
Supports individual portion planning and label use, not a chocolate-specific allowance. The review accessed indexed text; a subsequent direct opening timed out.