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Does coffee cause cancer?

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coffee cup

Nutrition is a relatively young science with new research constantly emerging. The recent headline about coffee and cancer is a good example of this.

Twenty-five years ago, the World Health Organization (WHO) had identified coffee as a possible carcinogen linked to bladder cancer. On June 15, 2016, the WHO updated their advice.

The WHO’s International Agency for Research on Cancer, which is an international working group of 23 scientists, reviewed 1000 scientific studies, and found that drinking coffee and maté (a tea made from the dried leaves of the yerba mate plant) is not linked to cancer. In fact, coffee may be protective against cancers of he liver and uterine endometrium.

The new findings however do see a connection between high-temperature beverages and their potential link to cancer. According to the WHO, drinking beverages (even water) that are very hot – which is defined as anything above 65°C (149°F) – is linked to a higher risk of cancer of the esophagus. It’s thought that the hot temperature scalds the delicate tissue in the esophagus. This damage may then trigger a faster turnover of the cells which in some cases can lead to out of control malignant growth.

Esophageal cancer is the eighth most common cancer worldwide with the highest incidence in Asia, South America, and East Africa where drinking very hot beverages is common. Maté is traditionally consumed at very hot temperatures (70°C). Certain countries such as China and Iran also tend to drink their teas prepared at very high temperatures, above 65°C or 70°C.

It’s likely that your favourite hot drink from the coffee/tea shop is made at very hot temperatures. Here are my tips for enjoying your hot cuppa:
– Allow your hot drink to cool down a bit before taking that first sip.
– Add some milk or cream to lower the temperature of your hot drink.
– Brew your own tea using hot but not scalding hot water.
– Stick to four cups of coffee or less (4 x 8 ounces or 4 x 250 mL) – any more will put you over your daily caffeine limit.

FDA introduces new Nutrition Facts Table

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The Nutrition Facts Table (NFT) in the USA is over 20 years old. On May 20, 2016, the FDA (U.S. Food and Drug Administration) introduced the new label to help consumers south of our border make informed choices about the food they buy and eat.

NFT old versus new 2016 v2

Here’s a brief summary of the key changes that will take effect by July 2018 on USA food labels:

1. Serving size and servings per container – are now highlighted in larger font and/or bold. Serving sizes have been updated.
LIKE: This underscores the importance of portion sizes.
DISLIKE: The serving sizes are based on the amounts of food and beverages that people are actually eating, not on the amounts that they should be eating. For example, the serving size of ice cream was previously ½ cup but is changing to 2/3 cup.

2. Calories – are now highlighted in extra large font (how can you miss it?)
LIKE: With a global obesity crisis, calories have become the simple currency of weight. We tend to underestimate the calories that we consume.
BUT…Calories does not tell the whole story. Remember to look at the bigger picture of nutrient density and food quality. A Greek yogurt parfait with nuts and fruit may have more calories that a donut – but which is the healthier choice?

3. Calories from fat – have been removed
LIKE: We know that the quality and type of fat is more important that the amount of fat.

4. Added sugars – makes a debut on the new USA NFT. The %DV (% Daily Value) is set at 50 grams.
LIKE: Consumers are hearing more about sugar and health. According to the FDA, research shows that it is difficult to meet nutrient needs while staying within caloric limits if you consume more than 10% of your total calories from added sugars. Disclosing the amount of added sugars on the label will help consumers better distinguish between the natural sugars versus the added sugars in the food.

5. Vitamin D and potassium – are required to be declared on the USA NFT, along with calcium and iron. For each of these, both the actual amount and the %DV amount are listed. Vitamins A and C are no longer mandatory, and can be listed on a voluntary basis.
LIKE: Since many of us are probably not getting enough Vitamin D, potassium, calcium and iron, these nutrients are of public health significance.

6. Footnote – is added to help put the %DV into context for consumers.
LIKE: The %DV is an easy way for consumers to determine whether the food has a little (less than 5% DV) or a lot (15% DV or more) of a nutrient.

The real question now is – will Health Canada follow suit with our NFT?
Stay tuned, I’ll let you know as soon as it happens!