As I said, I got a 25° S curve scoliosis and I went to 55 kg at 16 years to 17 years due to anxiety and psychosis in school. Did this worsen or cause my scoliosis? Im 20 years old now. We recognized my scoliosis at 19 years.
So did I have scoliosis since I was a kid but unnoticed, or did this hunger cause it or worsen it?

"They found evidence (from studies with animals) that poor nutrition could be a contributing factor of idiopathic scoliosis. They cited strong evidence for an interaction between poor nutrition and genetics but stated that there is only anecdotal and limited study data for humans and therefore suggest further research into poor nutrition as the etiology of Idiopathic scoliosis"

Am I wrong??

This is ridiculous! Starving has nothing to do with Scoliosis. My daughter was never starved or needed for food. I have never heard of such a silly thing.

So when I starved myself due to psychosis and anxiety to 55 kg as a male, my scoliosis did not develop or worsen? That was at age 16 to 17 and at 19 years I recognized my scoliosis and got a diagnosis. That has nothing to do with it? It was already there??

Interesting question! This is the first time I have heard of nutrition as a possible factor of AIS. I made a short research. I will send you my answer in parts because it is long and it doesn't allow me to send the whole thing at once......So before I answer you must know this: What we call a human being (or generally speaking a living organism) is a result of GENETICS and ENVIRONMENT.

Genetics means genes (parts of a DNA sequence that are translated to create a protein) that you inherit in the process of embryogenesis through your mother and your father, with two copies of a gene one inherited from each parent (called genotype).

Environment as you can imagine is the external factor (microorganisms, radiation, extreme heat, nutrition -chemicals in general-, living patterns and other external factors that science hasn’t figured out yet). More specifically, environment is in a very wide term a “force” (mutagens) that causes the DNA sequence of a gene to change (called induced gene mutation- could be for the best could be for the worst or most of the time just neutral) or defines whether an already existing gene will be expressed or not (called phenotype).

So this led the researchers to the hypothesis that a specific nutrition pattern (an environmental factor) may “force” the DNA sequence of a specific protein which is responsible of the spinal development to either CHANGE (mutation), leading to a protein that is no longer suitable for its job, or NOT BE EXPRESSED. Another perspective is also the possibility that scoliosis occurs due to the EXPRESSION of a gene/genes that are pathogenic, because of lack of environmental factors that could lead to blocking this genes’ expression. The hypothesis has a rational basis so taking into consideration the link you sent I was able to find 3 studies that experimented on this hypothesis. Keep in mind that in order for a hypothesis to become a fact there should be held many additional surveys on the subject.
You can also take a look at this research which gathered all the studies that have been held which associate the occurrence of scoliosis with a factor. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3293085/pdf/1748-7161-6-26.pdf (pages 4-5)
>From these studies I found that 1) Yes, there are evidence that a specific nutrition can be associated with the occurrence of scoliosis. So assume you have the gene/genes that are responsible for scoliosis as well as a hypothetical brother of yours with the same pathogenic genes. It is indicated that whether these genes will express leading to the phenotype of scoliosis or not COULD BE linked to the dietary patterns that you choose. So if your hypothetical brother, who has these genes, eats healthier than you, then there is a possibility that these genes may be blocked from expressing leading him to NOT developing scoliosis. These dietary patterns so far indicate that deficiency of selenium and Vit D could be a possible factor, as well as some specific additives used in food products in the industry. Further examination is needed though. 2) Other factors associated with AIS are increased maternal age, absence of physical exercise, playing volleyball and introduction of infants in heated swimming pools.
Unfortunately not enough research has been made on why scoliosis occurs!
Stay calm and don’t blame yourself as t is not certain whether diet plays such an important role. All you can do is follow your treatment and try as much as you can to eat properly and EXERCISE as there many researches that show clearly the positive results you can get from specific exercises. I had a friend with an almost 25° S curve that treated her scoliosis to the point of zero degrees by wearing a brace!