NATIONAL FASTING DAY

Establishing a National Fasting Day would have multiple benefits, including helping to address the diabetes and obesity epidemics, environment, and world food inequality. By pausing all food-related activities for just one day, people would not only experience the immediate health and economic benefits of reduced consumption (and the corresponding drop in emissions and waste), but they would also be prompted to reflect on the broader toll that food production, distribution, and disposal take on the planet.

• Fight diabetes & obesity through dietary changes

• Reduce our environmental impacts

• Acknowledge how lucky we are to have abundant food access. 

A National Fasting Day in America would provide immediate environmental benefits by reducing food consumption and waste—and would also serve as a powerful catalyst for improved personal health. By encouraging intermittent fasting and mindful eating, the initiative could help lower the risk of obesity and diabetes, fostering a healthier population while simultaneously addressing environmental challenges.

A Dedicated Fasting Day Can Raise Awareness

1. Encouraging Intermittent Fasting Habits

• Breaking the Cycle of Overconsumption:

A dedicated fasting day can help individuals reset their eating habits. Studies on intermittent fasting suggest that giving the body regular breaks from constant food intake can lead to improved metabolism, weight loss, and reduced insulin resistance—all key factors in preventing and managing diabetes and obesity.

• Improved Insulin Sensitivity:

When people fast, insulin levels drop, which can improve insulin sensitivity. Over time, improved insulin sensitivity helps the body better manage blood sugar levels, reducing the risk of type 2 diabetes.

2. Promoting Mindful Eating

• Heightened Awareness of Food Choices:

By taking a break from regular eating patterns, individuals might become more aware of what they consume on non-fasting days. This awareness can encourage healthier food choices, reduced portion sizes, and decreased reliance on highly processed, high-calorie foods that contribute to obesity and diabetes.

• Cultural Shift Toward Healthier Lifestyles:

A National Fasting Day could serve as a public reminder to adopt a more mindful approach to eating. Over time, this could foster broader cultural changes that prioritize balanced meals, nutritional education, and a focus on whole foods.

3. Breaking Unhealthy Patterns

• Reducing Caloric Overload:

Many people regularly consume more calories than they need, often through high-sugar and high-fat foods that contribute to obesity and metabolic issues. A fasting day can help break this pattern by forcing a pause in consumption, which may help reduce overall caloric intake over time.

• Potential for Lasting Behavioral Change:

Experiencing the benefits of fasting—even for one day—can motivate individuals to adopt regular periods of reduced food intake or healthier eating habits, which could contribute to sustained weight management and improved metabolic health.

4. Complementary Public Health Messaging

• Health Education Campaigns:

National Fasting Day initiatives could be paired with public health campaigns that educate Americans about the links between diet, obesity, and diabetes. Highlighting scientific research on the benefits of controlled fasting may encourage more people to experiment with intermittent fasting protocols under medical guidance.

• Community Programs:

Schools, workplaces, and community centers could host events focusing on nutrition, exercise, and cooking healthy meals. Such programs could empower individuals with the knowledge and skills to make healthier lifestyle choices, thereby reducing the prevalence of obesity and diabetes.

5. Highlighting the Complexity of the Food Chain

• Farm to Fork: 

Most people rarely think about how many steps are involved in getting food from the farm to the grocery store or restaurant table. A fasting day—and the conversations it sparks—can illuminate how farming practices (pesticide use, fertilizer runoff, land conversion), packaging (plastics, cardboard), and transportation (trucking, shipping, refrigeration) collectively contribute to plastic waste, habitat destruction, and greenhouse gas emissions.

• Emphasizing Resource Use: 

Producing food requires substantial inputs of water, energy, and land. By going without food for a day, participants might be more inclined to learn about the resource intensity behind the meals they typically eat.

6. Fostering Mindful Consumption

• Spotlighting Food Waste: 

On an average day, Americans waste significant amounts of edible food. A national pause on consumption can draw attention to how much we throw away—and how waste contributes to the new plastic toxicity epidemic, and to landfills that generate potent greenhouse gases like methane.

• Encouraging Personal Reflection: 

When people feel the absence of food, they may become more conscious of which foods they truly need versus those they buy out of habit or convenience. This self-reflection can lead to more thoughtful shopping and eating habits in the long term which will help human health as well S our environmental.

7. Creating a Shared Cultural Moment

• Media and Public Discourse: 

A unified day of fasting would likely attract significant media coverage, giving environmental organizations, educators, and policymakers an opportunity to highlight critical issues like deforestation for agriculture, the climate impact of ultra processed foods, and how the food/bev system produces half of plastic pollution.

• Community Engagement: 

Local events—such as lectures, workshops, or online forums—could be organized around the fast, turning it into an educational opportunity rather than just a day without eating. People might come together to discuss healthy eating, low carbon footprint diets, composting, or low-waste meal planning for after the fast.

8. Linking Personal Action to Policy Change

• Demonstrating Consumer Demand: 

By participating in a day of reduced consumption, individuals can signal to policymakers and industry leaders that there is public support for sustainable agriculture, responsible packaging, and waste-reduction initiatives.

• Inspiring Broader Reforms: 

As awareness grows, it can pave the way for stronger environmental regulations, incentives for regenerative farming practices, and increased funding for waste management, reduced reliance on plastics, and recycling infrastructure.

9. Nudging Long-Term Behavioral Shifts

• Health and Sustainability: 

Fasting can spark conversations not just about environmental impacts, but also about nutrition and the health benefits of a more balanced, less wasteful diet. It can also remind people how lucky we are to live in a country of excess while other parts of the world struggle to accessing their nutritional needs.

• Habit Formation: 

A single day of awareness can be a “gateway” to ongoing practices—like Meatless Mondays, zero-waste challenges, or purchasing locally grown produce—that collectively help reduce an individual’s carbon and plastic footprints.

In essence, a National Fasting Day can act as a symbolic and educational moment, bringing the entire nation’s attention to the often-unseen ecological costs behind everyday meals. By combining the tangible reduction in consumption with widespread outreach and discussion, it could catalyze both personal and collective transformations in how Americans source, consume, and value their food.

Below is a rough, top-level estimate of the environmental benefits if all U.S. adults took part in a single “National Fasting Day”—with restaurants, supermarkets, and food delivery services closed for that entire day. This scenario assumes that on this day there is effectively no new food or beverage consumption (everyone skips buying or consuming fresh meals, drinks, or deliveries).

1. Estimated One-Day GHG Emissions Savings

A useful reference point comes from our calculations for one fasting day per month (12 days/year). Those analyses suggested an annual GHG reduction of 16.9–20.7 million metric tons of CO₂ if every adult fasted monthly, or roughly:

A fast for earth day envisions everything food-related shutting down (restaurants, grocery stores, deliveries), the per-day savings would be at least in that 1.4–1.7 million metric tons of CO₂ range. In reality, it could be a bit higher if absolutely no meals are purchased or consumed from all businesses.

In short: Roughly 1.4–1.7 million metric tons of CO₂ savings in a single nationwide fasting day.

2. Estimated One-Day Plastic Waste Savings

From our monthly-fasting analysis, we found a total annual plastic reduction of 651,800–822,280 metric tons over 12 fasting days.

With restaurants, supermarkets, and delivery completely shut, you eliminate most single-use packaging (takeout containers, grocery bags, beverage bottles) on that day.

In short: Roughly 55,000–70,000 metric tons of plastic waste avoided for that single day.

Important Caveats:

1. Shifting Consumption:

In reality, some people might buy extra food or beverages the day before or after. That shifts some emissions and packaging to surrounding days rather than truly eliminating them. Strictly speaking, the day’s new emissions (e.g., restaurants cooking, grocery deliveries, etc.) would still drop dramatically.

2. Partial vs. Complete Participation:

Achieving 100% participation and closure is hypothetical. Even partial participation would still yield meaningful environmental benefits.

The United States president has issued proclamations for days of national fasting and prayer in the past. Fasting days have also been observed in colonial times.

Fasting days in US history:

• 1798: President John Adams proclaimed a fast day on March 23

• 1799: President John Adams proclaimed a fast day on March 6 

• 1814: President James Madison recommended January 12 as a day of fasting, prayer, and humiliation

• 1861: President Abraham Lincoln proclaimed the last Thursday in September as a day of fasting, prayer, and humiliation

• 1863: President Abraham Lincoln proclaimed April 30 as a day of fasting, prayer, and humiliation