Show HN: A website for comparing protein powder prices

I bet many folks would have the same results with 2x less protein intake.

Fortunately, I do not have milk digestion problems, so I can use whey protein concentrate, from which (by mixing with a vegetable oil) I make something that has the aspect and taste of melted cheese, which I use instead of real cheese.

While whey protein concentrate has a little lactose, it has much less lactose than almost all other dairy products.

Where I live, in Europe, whey protein concentrate is $0.575 per 25 g of pure protein, including taxes (i.e. VAT) and shipping, so it is a little cheaper than the cheapest protein source on this list.

While this list includes enough items with a reasonable price, any of those with a price over $1 per 25 g of pure protein is likely to be an attempt to exploit naive buyers of fitness-related products, by including excessive profit margins.

For example, the protein concentrates from whey or milk are obtained by just two filtrations through filters with different pore sizes, the first coarse filter retains any larger particles, including bacteria, while the second fine filter retains the protein particles and passes the water with lactose and fat and also with any contaminants that are soluble in fat or in water.

Thus the protein concentrates from whey or milk normally have less contaminants than in the whey or milk used for their production.

An obvious sign is the reduction in muscular mass, e.g. if your arms and thighs become thinner.

A less well known sign is the swelling of both feet (bilateral feet edema), when you might begin to feel that your shoes are too small, which is caused by a too low albumin concentration in the blood. (However there are also other possible causes for feet swelling, like diabetes, so a blood test is necessary to confirm the cause.)

The low albumin concentration in the blood can be detected by a blood test before causing noticeable effects, like the swelling of the feet.

Normal daily protein intakes are between 1 g and 1.5 g of protein per kg of body weight. For those who do intense physical activities more than that is required.

There have been some earlier recommendations of lower protein intakes, like 0.8 g per kg, but later studies have discredited those recommendations as being too low, especially for old people, who need to eat enough proteins to avoid the loss of muscular mass.

I would not start my search this way. Instead I would find a list of lab-tested products that meet purity and potency.