I read news everyday. At least some of the news articles are about bullshit studies telling you what is good or bad for your health. Over time, I started seeing a pattern. Most of these bullshit studies contradicted each other clearly. Below are some examples I found very recently.

Vitamins

This study says that Vitamins are good for you and can slow cognitive decline.

Then, this article cites several studies that say that Vitamins increase the risk of cancer appreciably and will kill you faster.

This study says the Vitamins are neither good nor bad for you, but completely useless.

Alcohol

This article cites multiple studies which say that moderate alcohol consumption is good for you (and me).

This study proves that drinking even moderate amounts of alcohol will shrink your brain.

Egg Yolk

We all know in the last decade there were several studies advising you not to eat egg yolk, because they are high in cholesterol.

Thankfully, it was recently conclusively proven that eating food high in cholesterol doesn’t cause higher levels of blood cholesterol.

Ketamine

This study proves that Ketamine helps with Depression and Anxiety Disorders.

This study proves the exact opposite, Ketamine can cause your Anxiety to become worse.

Psilocybin (Magic mushrooms)

This article cites multiple studies which provide that Psilocybin can alleviate depressive symptoms for up to a year.

This study says that Psilocybin is in fact, bad for mental health.

Marijuana

This study cites that cannabis is effective in treating mental disorders. There are many studies claiming cannabis is effective for pain management.

This study (among many others) cites the exact opposite. In fact, I, myself have seen marijuana crazed people in mental distress.

Grain free Dog/Cat Food

There was a fad a couple of years ago where all pet parents started feeding their pets grain free food. The logic was, the ancestors of these animals lived in the jungle and hunted for food, so never had access to grain.

All was well, till grain-free pets started dying from heart failure. Now there’s an FDA alert against grain free food.

Ozempic

This article says that if you use Ozempic to lose weight and then you stop taking it, you gain back more than you had lost.

This study says the exact opposite.

Blue Light

Remember all the studies that told you that blue light in the evenings and at night is bad for you and your sleep? How every OS there is actually baked in a feature to turn your screen warm after sunset? Remember that they even sell lasses that block blue light?

This study linked from this article states all that is bullshit, it is now yellow light which is bad for you and your sleep.

I wonder what is the reason for such contradictory studies. I can think of the following cases

1. Both studies are in fact correct, people are different and everyone reacts to things differently.
2. Some of these studies are bullshit/unscientific.
3. The entire mechanism of studies is inherently wrong.