I read the article. Maybe you should also read it again. Only half of the original set of participants chose to continue in this study of GM1 for 5 years. Why is that? If the medication was so effective, why wouldn't the researchers get all 48 people to participate?

So you start out with a tiny, non-randomized study of just 26 of those original 48 people.

After 5 years, guess how many are still in the study taking GM1? 10. 16 people dropped out of the study over time.

Again, if GM1 was as effective as you believe, these are not drop-out rates you would expect or want to see in your study. They are horrible drop-out rates.

So GM1 has potential. More research is needed. Researchers get funding for research generally through a variety of mechanisms -- government, pharma, research organizations, etc. -- so no single mechanism can be blamed for not funding such research.

DocJohn