The newly released 2025–2030 Dietary Guidelines for Americans underscore what many people in the field of nutrition research or clinical practice have long understood: reducing added sugars and refined grains is essential for improving metabolic health. Yet despite decades of public education campaigns and food labeling improvements, ultra-processed foods rich in these ingredients remain firmly embedded in the American diet.
The cost of treating diet-related chronic disease is already placing immense pressure on the U.S. healthcare system, with similar patterns emerging around the world. In many countries, rising rates of obesity and poor metabolic health are driving up healthcare spending and contributing to productivity losses, further underscoring the need for preventive strategies that can be implemented at the population level.
Given this disconnect between dietary guidance, real-world eating patterns, and chronic disease, is it time to consider a modest tax on sugar and refined carbohydrates to help shift consumption?
It’s a controversial idea and one that understandably raises concerns about personal choice and government overreach. But as rates of obesity-associated type 2 diabetes and fatty liver disease continue to climb, it’s worth taking a look at whether a targeted tax might help reduce the health and economic burden of poor nutrition.
What the Research Says About Sugar Taxes
More than 45 countries have implemented some form of sugar-sweetened beverage (SSB) tax, along with several major U.S. cities such as San Francisco, Philadelphia, and Seattle. Early evidence suggests these policies can reduce purchases of sugary drinks, with particularly strong effects among heavy consumers and lower-income households. These individual-level impacts align with broader patterns seen globally. For instance, a systematic review of 16 studies found that SSB taxes were linked to reduced purchases, sales, consumption, and overall energy intake, with larger taxes yielding greater effects.
One notable case is Mexico, where a national tax on sugary drinks led to a 6.3% decline in SSB purchases and a 16.2% increase in bottled water purchases, with the largest changes seen in low-income and urban households, suggesting that well-designed taxes can shift consumption patterns while supporting healthier choices.
Although most sugar taxes have focused on beverages, some have expressed interest in extending them to other ultra-processed products high in sugar and refined carbohydrates. A recent analysis of nearly 50 U.S. policies found that foods like candy, doughnuts, pretzels, and chips are commonly defined as “junk food” using a mix of product category, nutrient content, and processing level. The authors suggest that clear, practical definitions can help support targeted taxes that reduce consumption, encourage reformulation, and generate revenue for public health initiatives.
Addressing Concerns About Regressivity and Fairness
One of the most common critiques of food taxes is that they may disproportionately affect low-income individuals, who tend to spend a larger share of their income on food and may consume more processed products.
That concern is valid, and it’s why the design of any tax must be paired with thoughtful reinvestment of the revenue it generates. Countries that have successfully implemented food taxes have also directed funds toward programs that support nutrition equity. For instance, the Philippines, Thailand, and Mexico have gone beyond taxation alone by using revenue from sugar-sweetened beverage taxes to fund health initiatives, from universal health coverage and clean water access to national education campaigns.
In the U.S., a similar model could work if it is structured correctly. Redirecting funds toward nutrition education, Supplemental Nutrition Program (SNAP) benefits for minimally processed foods, school meal improvements, and even regenerative agriculture could help ensure the policy is not only effective but equitable. Research suggests that combining taxes on unhealthy foods with subsidies for minimally processed, health-promoting options could not only improve diet quality but also help offset the financial burden on lower-income households, who tend to be more responsive to food price changes.
A Targeted Approach
Any policy that changes the price of food must be approached carefully. It’s important that whole foods like fruit, starchy vegetables, and minimally processed grains are clearly distinguished from sugar and refined carbohydrates.
Rather than taxing entire food categories, a better strategy might focus on specific added ingredients or products, such as:
- Added sugars, commonly found in desserts, beverages, and sweetened snacks
- Refined starches, such as white flour, maltodextrin, and other processed carbohydrates
- Ultra-processed products high in sugar and refined carbs like cookies, candy, and chips, which offer minimal nutritional value
This kind of ingredient-based approach would align more closely with the Dietary Guidelines, which now encourage Americans to reduce added sugars and limit refined grains, while emphasizing nutrient-rich real foods in their whole form.
Where Should the Money Go?
If a tax on sugar and refined carbs is implemented, its impact will depend heavily on how the funds are used. Some options include:
- Healthcare cost offsets for diet-related conditions like type 2 diabetes, cardiovascular disease, and fatty liver disease
- Subsidies for nutrient-dense whole foods, such as meat, eggs, dairy, and produce
- Nutrition education programs, particularly in underserved communities and schools
- Support for regenerative agriculture, to help lower the cost and increase the availability of nutrient-dense foods grown with sustainable practices
- Expansion of school meal quality standards and access to fresh, minimally processed options
While there’s limited data on outcomes from countries that have implemented similar changes, these are promising opportunities for the U.S. to consider. Thoughtful reinvestment of tax revenue could help ensure that such a policy not only discourages unhealthy consumption but also expands access to better food, supports sustainable farming, and improves long-term health outcomes.
A Strategic Shift for a Healthier Future
Taxing sugar and refined carbs could be one part of a broader shift toward a food system that supports metabolic health.
This isn’t about demonizing individual foods or making life harder for families. It’s about using policy tools to make healthier options more affordable and less healthy options slightly less convenient, while reinvesting in the long-term health of our communities.
If done thoughtfully, a tax of this kind could help support a more balanced food environment – one that prioritizes prevention, equity, and long-term well-being over short-term convenience – and give the U.S. an opportunity to lead this shift on a global scale.
