Definitely not. Nutrition and dietary studies are famously hard to draw any solid conclusions from due to the logistical challenges of performing quality studies (randomization, blinding, "placebo" effects, adherence, follow-up, ...). Additionally, do we assume these effects are consistent for everyone, or certain age groups, genetic markers, ethnicities, etc. Even within individuals, would effects be beneficial for the whole lifetime?

It seems balance and "do what works for you" would be the recommendation.