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As someone who does sports professionally, I highly recommend talking to dietitian and doing specialized medical examination before doing any diets or taking fo

As someone who does sports professionally, I highly recommend talking to dietitian and doing specialized medical examination before doing any diets or taking food supplements. Just consuming more protein does not mean "weight loss" or "more muscles" because extra protein will be converted to glucose thanks to gluconeogenesis and then some of it will convert to fat. Too much protein could also lead to kidney/liver issues as well as atherosclerosis or other health conditions. When you work out regularly or semi-professionally you will grow muscle mass that will lead to weight loss: workout -> more muscle mass -> more energy consumption -> weight loss. Last but not least, not all protein created equal: you also have to balance animal and plant protein. There're also slow and fast digested proteins (casein/whey). As they say, do not try this at home and talk to your doctor.

sawmurai 8y ago
There is actually no scientific proof for the claim that too much protein can harm the kidneys or liver. The science that created that myth was badly flawed. Edit: see https://examine.com/nutrition/can-eating-too-much-protein-be-bad-for-you/ https://examine.com/nutrition/can-eating-too-much-protein-be... for a nice write up including sources
- Nasrudith 8y ago
  That is trivially untrue just from cats - as obligate carnivores they have "overclocked" kidneys such that they can drink sea water and gain hydration. This serves them regardless of fresh water availability due to their need to break down so much protein for calories and will quickly suffer ammonia poisoning if given they lack sufficient argine while digesting a meal. And yet the kidneys are still a common thing to start failing in old age and call for a lower protein diet to counteract. Again in an obligate carnivore with less intestinal length. It is true that we aren't obligate carnivores but the underlying mechanism for damage exists regardless of how well it is countered.
  - sawmurai 8y ago
    Maybe ... but that still does not mean that science proofed a high protein diet is bad for the kidneys of healthy humans.
  - ianai 8y ago
    Well said. And humans definitely need healthy intestinal tracts - and need complex carbs to last long enough to feed beneficial microbiota.
  - justtopost 8y ago
    Humans are not cats. There is no data supporting any of what you mention in people. Protien is perfectly safe. Are you going to argue we die without carbs next? Got a single citation to your point?
    - Nasrudith 8y ago
      The dose makes the poision in everything - it is just a statement that it isn't perfectly safe and nothing is. Oxygen can cause cancer. The point was that if even a far more specialized species could have problems with proteins there is a mechanism for damage from too much - what that ammount may be is another question. Just like too much carbohydrates can overwhelm the pancreas too much protein may overwhelm the kidneys and liver. I had done extensive feline research recently for a fiction side project and will give my links - I had one that described the metabolic process specifically.
      - Nasrudith 8y ago
        Bizarrely and disappointingly I'm finding less than expected when looking through my history. Here are a few relevant bits. https://pets.thenest.com/lowprotein-cat-food-cats-kidney-disease-9912.html https://pets.thenest.com/lowprotein-cat-food-cats-kidney-dis... https://feline-nutrition.org/answers/answers-what-exactly-is-an-obligate-carnivore https://feline-nutrition.org/answers/answers-what-exactly-is... https://www.physiology.org/doi/abs/10.1152/ajplegacy.1959.196.3.633# https://www.physiology.org/doi/abs/10.1152/ajplegacy.1959.19...
  - 8y ago
ianai 8y ago
Thats good advice, usually. But there are doctors out there pushing questionable food practices. Foods a huge industry with many snake oil salesmen/women.
virtuallynathan 8y ago
From the reading I've done, gluconeogenesis is demand driven. Protein -> stored fat is the most inefficient macronutrient pathway in the body, something like 50% efficiency, perhaps even less. I've not seen evidence for protein causing atherosclerosis or kidney issues. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1262767/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1262767/ Also, keep in mind doctors are taught almost 0 about nutrition in med school. I doubt many keep up on the latest nutrition research.
doe88 8y ago
I think it is often suggested as rule of thumb to eat 20 grams of proteins every 4 hours, with 3 gr out of these 20 gr being compounded of leucine. But again, if interested in all of this the best is to go see a specialist.

sawmurai 8y ago

There is actually no scientific proof for the claim that too much protein can harm the kidneys or liver. The science that created that myth was badly flawed. Edit: see https://examine.com/nutrition/can-eating-too-much-protein-be-bad-for-you/ https://examine.com/nutrition/can-eating-too-much-protein-be... for a nice write up including sources

Nasrudith 8y ago
That is trivially untrue just from cats - as obligate carnivores they have "overclocked" kidneys such that they can drink sea water and gain hydration. This serves them regardless of fresh water availability due to their need to break down so much protein for calories and will quickly suffer ammonia poisoning if given they lack sufficient argine while digesting a meal. And yet the kidneys are still a common thing to start failing in old age and call for a lower protein diet to counteract. Again in an obligate carnivore with less intestinal length. It is true that we aren't obligate carnivores but the underlying mechanism for damage exists regardless of how well it is countered.
- sawmurai 8y ago
  Maybe ... but that still does not mean that science proofed a high protein diet is bad for the kidneys of healthy humans.
- ianai 8y ago
  Well said. And humans definitely need healthy intestinal tracts - and need complex carbs to last long enough to feed beneficial microbiota.
- justtopost 8y ago
  Humans are not cats. There is no data supporting any of what you mention in people. Protien is perfectly safe. Are you going to argue we die without carbs next? Got a single citation to your point?
  - Nasrudith 8y ago
    The dose makes the poision in everything - it is just a statement that it isn't perfectly safe and nothing is. Oxygen can cause cancer. The point was that if even a far more specialized species could have problems with proteins there is a mechanism for damage from too much - what that ammount may be is another question. Just like too much carbohydrates can overwhelm the pancreas too much protein may overwhelm the kidneys and liver. I had done extensive feline research recently for a fiction side project and will give my links - I had one that described the metabolic process specifically.
    - Nasrudith 8y ago
      Bizarrely and disappointingly I'm finding less than expected when looking through my history. Here are a few relevant bits. https://pets.thenest.com/lowprotein-cat-food-cats-kidney-disease-9912.html https://pets.thenest.com/lowprotein-cat-food-cats-kidney-dis... https://feline-nutrition.org/answers/answers-what-exactly-is-an-obligate-carnivore https://feline-nutrition.org/answers/answers-what-exactly-is... https://www.physiology.org/doi/abs/10.1152/ajplegacy.1959.196.3.633# https://www.physiology.org/doi/abs/10.1152/ajplegacy.1959.19...
- 8y ago

ianai 8y ago

Thats good advice, usually. But there are doctors out there pushing questionable food practices. Foods a huge industry with many snake oil salesmen/women.

virtuallynathan 8y ago

From the reading I've done, gluconeogenesis is demand driven. Protein -> stored fat is the most inefficient macronutrient pathway in the body, something like 50% efficiency, perhaps even less. I've not seen evidence for protein causing atherosclerosis or kidney issues. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1262767/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1262767/ Also, keep in mind doctors are taught almost 0 about nutrition in med school. I doubt many keep up on the latest nutrition research.

doe88 8y ago

I think it is often suggested as rule of thumb to eat 20 grams of proteins every 4 hours, with 3 gr out of these 20 gr being compounded of leucine. But again, if interested in all of this the best is to go see a specialist.