The Evidence
Plain-language summaries of the research behind Splint Diet. No cherry-picking. No exaggeration. Just what the data says.
Ultra-Processed Food Makes You Eat More
An NIH-controlled feeding study found people ate about 500 more calories per day on an ultra-processed diet vs. unprocessed, even when meals were matched for calories, sugar, fiber, fat, salt, and carbohydrates. Participants gained weight on the ultra-processed diet and lost weight on the unprocessed diet.
Why Liquid Sugar Is a Trap
Liquid calories bypass satiety signals more easily than solid food. Soda, juice, sweetened coffee, and "energy" drinks deliver fast sugar without fiber, protein, or chewing — all of which help signal fullness.
Protein, Fiber, and Satiety
Protein and fiber are the two strongest satiety signals in food. Starting meals with protein and including fiber-rich foods helps reduce total calorie intake without conscious restriction.
Why Walking Works After Intake Control
Exercise alone produces modest weight loss. But when combined with intake control, daily walking and strength training significantly improve body composition, metabolic health, and maintenance.
The History of Forced Food Change in Native Communities
Many Native communities had food systems built around local hunting, fishing, gathering, farming, preservation, ceremony, and movement. Federal policy, land loss, forced relocation, and commodity foods disrupted those systems. The CDC's Preventing Chronic Disease journal describes traditional healthy foods and food sovereignty as important approaches for addressing chronic disease.
What GLP-1 Drugs Do and Do Not Do
GLP-1 receptor agonists can reduce appetite and promote weight loss. But the FDA approved tirzepatide for chronic weight management in addition to a reduced-calorie diet and increased physical activity — even drug-based weight loss points back to intake control and movement.
Why Willpower Fails in a Fake-Food Environment
CDC data from 2021-2023 found ultra-processed foods made up 55% of total calories consumed by Americans. These foods tend to be hyper-palatable, energy-dense, low in dietary fiber, and high in salt, sweeteners, and unhealthy fats — designed to override natural stop signals.
When Real Food Is Taken Away
Many Native communities had food systems built around local hunting, fishing, gathering, farming, preservation, ceremony, and movement. Then federal policy, land loss, forced relocation, rations, commodity foods, poverty, and food insecurity disrupted those systems.
That is not a willpower story. That is a food-environment story.
Federal rations distributed to Tribal communities included foods such as lard and wheat flour, often selected because they were low-cost and shelf-stable rather than culturally appropriate or nutritionally strong.
The modern public health lesson:
When people are separated from traditional foods and pushed into cheap processed calories, health breaks. That lesson applies far beyond one community. It is the American food story.
CDC's Preventing Chronic Disease journal describes traditional healthy foods and food sovereignty as important approaches for American Indian and Alaska Native communities addressing chronic disease, including type 2 diabetes.