That is just nonsense... we don't know much about nutrition, but that doesn't mean you can't learn things from a well designed study. We know very little about

That is just nonsense... we don't know much about nutrition, but that doesn't mean you can't learn things from a well designed study. We know very little about human nutrition, and can't really make any reliable practical advice from scientific understanding yet, despite media and "health influencers" trying to claim otherwise. That doesn't in any way mean that all studies themselves in the field are junk. This particular study is an observational study. That is only the very first part of trying to understand things- they notice some correlations, which can be further studied later on. They don't typically tell you anything concrete or actionable as they cannot establish cause and effect. That doesn't mean there is anything fraudulent or "junk" about them- typically the authors will be honest about the limitations in the paper, but the pop news articles like the one linked here may not be.