Nutritional science is roughly concerned with the question, "what constitutes a healthy diet?", and it has failed to produce even partial answers at every turn.
Please cite your source.
Just one source of many: https://www.bmj.com/content/351/bmj.h3580 (2015)
> 2, 3, 4, 7, 8, 9, 10 and 11 come from cellular and molecular biology, not nutritional science.
These have all have nutritional studies.
For example, #7 dates back to the late 19th century, decades before molecular biology.
Another vastly replicated result you can find quite easily: low-glycemic-index diets and ketogenic diets can produce weight loss despite caloric excess.
And lastly, a reasoning from first principles reveals a prima facie credible flaw in the caloric balance hypothesis: the body is not a closed system, ergo the law of conservation of energy does not apply. More vulgarly: you can do things like "work up an appetite" or "shit excess food".
>These have all have nutritional studies.
The nutritional studies did not produce these initial findings. Without pointing to specific papers, it's hard to be very precise, but I would be willing to bet that these are either dietary studies building off of biological first principles, or replication-checks in broader studies. Both are totally fair practices, but can't be considered as an indication that nutritional science is a fruitful field.
If you run 20 more miles every day and eat 100 more calories, I suspect won't gain weight.
The banality of your arguments speaks for itself.
Nutrition facts that have been known for 20+ years:
1. Increased calorie consumption causes weight gain.
2. Diabetics are unable to properly metabolize carbohydrates without insulin.
3. Fat is necessary to hormone production.
4. Protein is necessary to create or maintain muscle mass.
5. Carbohydrates with high glycemic index cause fluctuations in blood sugar and energy levels.
6. Fiber promotes bowel regularity.
7. People with Celiac diseases have an autoimmune response to gluten, a protein found in grains.
8. Iron is necessary to cognition, motor development, and energy levels.
9. Vitamin A promotes eyesight.
10. Calcium is necessary for bone strength.
11. Vitamin D promotes Calcium absorption.
Not a comprehensive list, just what I could think of off the top of my head.