The French love their food. The world loves French food as well with French cuisine often voted among the best on the planet. French dishes, however, with their emphasis on sauces and cheeses, are high in saturated fat and cholesterol. Despite this, the French have a low incidence of heart disease. This is the French paradox: why is there a low rate of heart artery disease despite a dietary pattern heavy in saturated fat? Many theories and much research has tried to explain this paradox. One theory is that the French drink more red wine than other cultures and that the wine helps protect against heart disease. However, this is likely not the case as we are discovering that alcohol, even red wine, is not heart healthy. Could the types of food used in French cuisine provide the answer?
In 2010, a new classification of foods was presented. The NOVA classification categorizes foods not based on their nutrients, but on the degree of processing that they undergo prior to consumption. It turns out that processing is really important. There are four groups in the classification. Group 1 foods are unprocessed or minimally processed and no substances are added to the original food. Examples include fresh fruit, vegetables, nuts, eggs, and pasta. Group 2 includes ingredients used in cooking such as sugar, oil, butter and salt. Group 3 foods are processed. Foods from Group1 and Group 2 are altered, usually using preservation techniques like canning, freezing, smoking, curing or pickling. Group 4 foods are ultraprocessed containing artificial ingredients, additives, emulsifiers, colorings and flavorings. Ultraprocessed foods are made in laboratories with little or no whole foods included in their make-up. Ultraprocessed foods are meant to replace fresh meals. Examples include sugar sweetened beverages, processed meat (example, hot dogs, sausages), sweet snacks and deserts, frozen dishes, canned soups, frozen pizzas, chicken nuggets and ice cream. Other, somewhat surprising, items are yogurt, diary-based desserts, bread and cold cereal. How can you tell if something is ultraprocessed? If you can’t make the food item with ingredients in your home kitchen, then it is likely ultraprocessed.
Ultraprocessed foods are extremely common. In the US and the United Kingdom more than 50% of calories come from these foods. On the other end of the spectrum, about 20% of energy is from ultraprocessed items in Italy and Greece. It has been shown that the greater the consumption of ultraprocessed products, the greater the risk for death, cardiovascular disease and stroke. Those with the highest intake of ultraprocessed foods have a 17% increase risk for cardiac disease mortality. The detrimental health effects are directly related to the amount consumed. If more than 40% of calories come from ultraprocessed foods, then adverse outcomes occur. Eating <30% does not worsen health outcomes. In the 30-40% range there doesn’t seem to be much harm. Consuming about 40% of calories from ultraprocessed foods equates to about 10 servings per day, while 20% is about 3-4 servings per day. In addition to adverse cardiac events, those whom consume > 40% have an increase in blood sugar and about 24% increased risk of diabetes. Also, since ultraprocessed foods are energy dense, there is an increase in weight associated with increased usage. These foods are designed to be addictive, causing you to consume more and more. The more calories that are eaten, the more weight gained. Lastly, high consumption of ultraprocessed foods increase the risk of cognitive decline, dementia and Parkinson’s disease, but it doesn’t seem to increase the risk for cancer. The bottom line is that eating a single, ultraprocessed item alone is not bad for you, but eating multiple servings each day is not good for overall health. The dose matters. Not all ultraprocessed foods are harmful. The two leading items that cause the most harm are sugar or artificially sweetened beverages and processed meats. Most of the other ultraprocessed foods seem to be neutral in terms of their adverse effects. Some ultraprocessed foods, such as breads, cold cereals and yogurt, actually decrease the risk of cardiovascular disease.
A recent study found that 39% of Americans believe that processed foods are not healthy. However, processing is not necessarily all bad. Processing prevents food from going bad, allows it to be transported and makes certain items available that are not in season. Some processed foods even decrease cardiac risk. The key is knowing which ultraprocessed foods to avoid and to keep consumption relatively low.
It is certainly possible that the type of food in the French diet could account for the French paradox. French cuisine emphasizes whole foods such as fresh fruits, vegetables and olive oil and is low in ultraprocessed food. In fact, the French consumption of ultraprocessed foods is about 30%, putting them in the lower risk category. So, to decrease your risk for cardiovascular disease, diabetes and other adverse health outcomes, be like the French and focus on eating whole foods, while eliminating sugar sweetened beverages and processed meats.