- 03-01-2013, 05:15 AM
I know that carbs are broken down into sugars.
Proteins (I'm referring to pure whey) are broken down into aminoacids.
In order to shed fat I have to eat a specific amount of proteins per day.
What does it happen if I exceed my daily intake of proteins?
Can the exceeding amino acids be transformed in sugar or fat?
- 03-01-2013, 02:49 PM
Yes they can, and it requires about 1 kcal per gram of protein to convert it into glucose or fat. So its quite expensive for the body.
03-01-2013, 03:40 PM
look up "gluconeogenesis." its a nice confusing process where your body creates glucose from non carbohydrate sources, which includes amino acids
03-04-2013, 06:06 AM
If you're trying to lose weight you have to be in an overall calorie deficit. As far as protein goes as long as you're around 0.8-1g\lb then that's enough to build muscle while on a deficit. If you have more then you will have to have less carbs and fats to stay in a deficit
03-04-2013, 04:27 PM
03-05-2013, 12:19 AM
Carbohydrates though are protein-sparing (meaning that they are preferred over proteins for energy) and allow the proteins to be better used for which they are intended.
It won't matter if you eat more protein than it says to, provided you are still in a calorie deficit. If you are limiting fat and CHO intakes (which I don't recommend) then yes, your body will convert aminos into glucose for use as a fuel or, if protein intake is excessive + you are in a calorie excess then aminos can be deaminated and stored as fat.
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03-08-2013, 11:46 AM
If I remember correctly, according to several sources inc. Lyle Mcdonald and John Keifer, proteins are very difficult to turn into fats, because the process is very energy intensive and convoluted. It doesn't start until you approach 3g/ lb or something like that. gluconeogenesis will; occur though to make glucose if you aren't taking in carbohydrates or enough fats.
03-08-2013, 11:56 AM
amino acid --> krebs cycle intermediate --> acetyl coa --> fatty acid
Other amino's are much easier to convert to glucose via gluconeogenesis and trans/deamination.
It is expensive, requiring about 1 kcal/gram (or 25% of the energy supplied by protein), but it does occur.
05-12-2013, 01:56 PM
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