Butter bei de Fische

Nutrition. Rethought.

I'm not a (certified) nutritionist - just someone who reads a lot and ran experiments on myself. Here I share what I've learned about metabolism, nutrients, and diet.

Explore the Simulation

See how meals, insulin sensitivity, and fasting glucose interact — without a lab. Pick a metabolic profile, eat a meal, and watch the curve react in real time.

Open Simulator

Meat and tofu, and a fork picking it up (Credits on the linked page)

Explore protein and essential amino acid requirements

Compare various eating styles with regards to their composition of essential amino acids and the quality and quantity of proteins they provide.

Explore protein requirements

Featured

A small child at the bottom of a very large stone staircase

Who should follow the advice here?

A collection of article links on this site, as a topic-based, easy entry point.

A plate of meat, tofu and vegetables - with a fork lifting out a piece of meat

Protein Requirement

Protein requirement looks like a matter of opinion - but there is a way to get at harder facts, and to tell proteins apart

Nobody's Taking Away Your Pizza

Ordering a Cola: normal. Ordering butter instead of potatoes: justify yourself and have the emergency number ready. How watered-down dietary guidelines became societal consensus.

A classic balance scale with two arms, nearly level

Caloric Balance: Cause or Effect?

An invitation to reverse the causality: why explaining weight loss through reduced calorie intake is not very helpful

A child sits at a desk drawing; on the wall above hangs a board with the chalk lettering 'We can do hard things'

Asking a Lot, Trusting a Little: The Nutrition Doc and the Informed Patient

If something is hard, that is a sign it is worth doing👍. Or that it is not worth even considering👎. It depends.

Cattle herd on pasture, in front of trees. One white animal among an otherwise black herd

Pasture-Raised Ruminants

Cattle get a lot of blame - how the farming method can turn that picture around

A man in swim trunks on the beach, looking out at the ocean. Photographed from behind — we're looking at the ocean too

Sunburn and UV

A surprising side effect of switching to a ketogenic diet: a new built-in sun protection factor

Saturated Fat

Schrödinger would have had a field day with the contradictory claims about whether saturated fat is harmful or beneficial. My take: ‘Everything is better with butter’