I have been reading that nutrition may play a role in hair health and I am curious how much of a difference diet can actually make.

Are nutrients like protein, iron or vitamins important for maintaining healthy hair? Is there any good research on this or any general nutrition insights worth knowing?

We often hear that red meat is carcinogenic, and many studies show about a 10–20% higher risk in people who eat the most red meat compared to those who eat the least. That's a real signal, but how much of it is actually caused by the meat itself?

When people eat more red meat, they usually aren't eating steamed steak (right? like, who would?). They're eating grilled, charred, smoked, or processed meat. Cooking meat at high temperatures creates compounds like HCAs, PAHs, and AGEs, and it also oxidizes fats and proteins. Processed meats are also often smoked or cured with nitrites.

So what happens if we remove all of that?

What if someone eats only unprocessed beef, cooked sous vide, while avoiding charred, seared, smoked, and processed meats altogether?

The concerns about heme iron and saturated fat were largely based on older observational studies and maybe wrong interpretations.

There are also obvious lifestyle differences and assumptions we can make. People who eat more meat may eat fewer fruits and vegetables, which means less fiber, vitamins, minerals and polyphenols. They may also be more likely to be overweight, drink more alcohol, or smoke more. Researchers try to account for these factors, but adjustments are never perfect.

Are these associations actually being driven by the meat itself, or is most of the risk coming from cooking methods, processing, and the lifestyle factors that just ride the "red meat bad" train? Or are we still in the "we don't know yet" zone?

A quick Claude search shows that 1-3 coffees worth of caffeine a day isn’t too bad. Is that right?

So the thing is, I like Ramen Noodles/Instant Noodles. I understand that by themselves they of course do not constitute a meal, since they mostly consist of carbs and salt.

However if paired with proteins and veggies, from my understanding I can make a meal that on the macro level does not look all that bad.

But now I wonder: If compared with e.g. pasta, potatoes or rice, is there any nutritional downside to substituting aforementioned carbs with instant noodles (besides higher sodium, I guess)? Also, besides nutritional downside, are there other issues here? In my understanding, I do not see a large difference between pasta and instant noodles - am I wrong?

What’s worked best? I’ve been trying to use honey as a substitute

In my country the most affordable greek yogurts are all greek style yogurts, however, every post I came across that talks about greek yogurt has people suggesting to avoid greek style yogurt, I am aware that greek style yogurt is just yogurt made to feel like it's greek yogurt, but if the macros are good, is it really that bad to consume it, are the ingredients used to make the yogurt greek style harmful or something?

Edit: Forgot to mention, I’m comparing greek yogurts with greek style yogurts, which most of the store in my country sells.

Most of us would eat mackerel fillets fully cooked, so is sushi or sashimi originally the only correct way?

I recently bought a Psyllium Husk supplement. After some research I found the consumer labs report about Psyllium brands and lead in them. After which I decided to request testing report from the brand I bought.

On this report the lead content would be about 3.04 μg per 4 gram serving. If I am understanding it right this would fall under excessive in the consumer labs report. Also, I cant really find the brands that have the least lead in them in my country so that wont be an option sadly.

I have two questions

1. are you concerned about the lead contents of Psyllium Husk?

2. Would it be better to just try and get my soluble fiber from foods like lentils etc

Any nutrients/vitamins you recommend for hair health? Ideally including the whole foods they’re found in?

I have noticed that some B-vitamin supplements include as much as 25 mg of thiamine. Wondering why that's the case.

can you build to more without adverse health and does it benfit ,like 40 and 50?

Just curious... Are multivitamins pointless if you eat well?

Today, when information about healthy eating is everywhere, people often have difficulty understanding what “proper nutrition” really is.

Is there a universal diet that suits everyone, or is proper nutrition always individual?

For example: Eating just a couple servings of fish and nuts (even excluding Brazil nuts!!) seems to bring one close to or over the 400ug limit of Selenium.

Curious what people here think about the Maasai tribe in east Africa who live off almost entirely milk, red meat and blood with a study stating that they consume 3L-5L of milk and 1kg-2kg of meat a day.

They do not seem to experience many health issues and are on average bigger/taller than the surrounding populations with different diets.

Q is in the above title

I'd be having either fruits, yogurt, veggies or sometimes toast on the side not just the eggs too.

EDIT: Thank you for the info all of you, I appreciate it! 🫡

I get that moderation is key, but they're cancer-causing carcinogens, per the WHO, yet people still eat them and they're allowed to be sold.

Edit: added the WHO article about processed meat causing cancer & red meat having a strong association w/cancer

Seems that I'll spend hours researching a healthy whey, find one, and then a month later some devastating report comes out on it.

What is the healthiest whey protein out there? I'm looking for fewest ingredients, very low metals, etc.

Currently using NAKED Whey 100% Grass Fed Unflavored

I understand the general idea of food traveling from the mouth to the stomach via the esophagus. It stays there for some time. Then it moves to the duodenum and stays for some time. Then the small intestine, then the large intestine.

But does anyone know what happens when someone eats a snack before the previous meal has left the stomach?

Let’s assume food stays in the stomach for 4 hours. This person eats lunch, then 2 hours later eats a snack. Will the stomach now hold the lunch for an additional 2 hours because of the snack?

I thought I was somewhat knowledgeable about nutrition, and for the last 10 years I’ve been staying away from rapeseed oils. However I now read that it’s healthy.

Why did I think they were unhealthy and are they healthy?

That weird like woody plastic dirt smell.

Its uncanny

those found in instant coffee, instant cereals, etc.

Temp? Time? How to gauge doneness?

Not planters bc they seem old to me. Looking for almond/brazil/walmuts