Provide counterarguments

[Carl-Richard]

"I just follow the dietary recommendations from the national institute of public health; they have 1000s of scientists that have done more research and better research than I could ever do".

[Basman]

People are different with unique needs, lifestyles, metabolisms, allergies, etc. It's impossible to generalize the best diet for everyone. It doesn't hurt to experiment with your diet to find what works for you. Just be honest about your results. I know that my mom calms her stomach by eating salty licorice. Don't ask me how that works.

Dietary guidelines are good frameworks for the average person though. The average person is so haphazard with their diet that following any health oriented guideline is an upgrade, as that usually just means more veggies and less junk.

Edited 1 hour ago by Basman

[zurew]

Dude wants to win an argument against his stepfather so bad that he is fishing for arguments .

One easy argument is just to point to history and to the fact that the standards and the recommendations have changed a lot over the years(just in the 21st century) . Also list him examples, where some of these health institutions were really wrong and also list him all the non-knowledge related things that can have a significant effect on what is being recommended by these institutions.

The other thing is what @Basman mentioned - try to point out why sometimes its reasonable to do an @integral move, where you do your own experiments and where you figure out your own thing. For instance, if after taking a vitamin pill you immediately feel dizzy (and after you repeat this process multiple times, the exact same bad event/effect happens over and over again), then it doesnt matter how much the experts tell you how you ought to feel by and after taking the pill (if your experience tells you a completely different story).

Or maybe try to find a close family example, where someone got fucked over by a doctor or by some health expert (maybe that would be more emotionally moving)

But be careful dude, dont turn your stepfather or (whoever else who you are arguing against) into a conspiracy theorist. 

Edited 30 minutes ago by zurew

[Basman]

Are you about to win an argument or losing a friend?