Ive noticed people who eat more junk food grow taller

[Carnivore]

If you eat enough calories and protein, you will most likely grow to your genetically determined height. Whether it is from whole foods or junk food doesn't really matter. If you compare the average height in Laos to Thailand (both the same people), you can determine how big of an effect eating enough food has on your height. Laos is poor as shit and has the lowest average height in the world.