Perhaps you could ask some of the gays, or find out somehow, what their diets are, in as much detail as possible?
I googled "homosexuality in Philippines" resulting in reports that there are many gays and the country is very gay friendly... "Friendliness" itself might be a good thing but first should be established what the condition exactly is, and if there is one, and what causes it to know what the "tone" of friendliness should be. Right now it is in general public, globally, regarded as something natural, something normal. But if it is the cause of malnutrition and false diet then it is nothing more than an "illness" just as is obesity. As well it is very clear that food people eat in general becomes farther and farther from what our bodies have evolved to use, and the number of gays, percentage wise, is increasing in parallel. (Then you can see everywhere arguments that it is not about the increase of gays but about them "coming out of the closet", yet actually answering nothing. This "argument" has the same flavor to it as does "human nature" and "god made it". So...
Always ask why, at one point it must get to "I don't know". If it does not then the person is lying. Because we do not know everything, and won't most probably forever. The "most probably" is in essence "I don't know".
There's as well probability and objective logic that must be accounted for, not to mention true "common sense". Almost all "pro-gay", pro-capitalism, pro-religious, etc., arguments lack these completely.)
Getting to know what exactly they eat, the specific individuals who are gays, would clarify matters immensely. As well to find out what eat those who aren't gay, in as much detail as possible. All in the same area. And in best scenario many areas. Basically statistics.