What % of carbs, protein, and fat are best? And why?

It's going to be different for everyone - and everything you read gives a different set of rules.
Most people say we should be eating more protein that MFP suggests, but other sites I read don't agree... who knows, just pick one and try it and see how it helps you meet your goals. If it's too hard to stick to or you aren't getting where you want to go - change it!

ha, i guess i'll repost, since after the other comments. .8g of protein per LBM, carbs < 30g. pad the rest of your calories with fat.

Why is this the best?

Well it's the best for fat loss. Due to the fact your body will use it's fat for energy. Sure you can lose fat with higher carb diet, but it takes more work. Other methods you have to burn through the sugar(carbs) first, before you get to the fat,unless you're doing low intensity training. This method, you don't. There are many studies that conclude this is the fastest weight loss method, the body behaves as it's starving, but you're eating food, besides that all the metabolic pathways are the same, except insulin is slightly elevated compared to starvation.

Long term studies have shown NO advantage to low-carb diets. Period.

Yes this is a low carb diet. This doesn't mean it's a "high protein diet." It's normal protein. People consume too much protein usually. Which in tern gets converted to glucose, which easily get stored as fat. As i mentioned already .80g of protein per lbs of LBM. OR MINIMUM 150g of protein. This prevents nitrogen loss. If anyone has a problem with this, don't debate with me, debate with lyle mcdonald.

I dare you to post this on Lyle's forum.

http://forums.lylemcdonald.com/index.php

Looking forward to seeing you get eviscerated.

increasing protein can be counter productive to fat loss

Stop making things up.

Come on Ron you're smarter than this.

Actually it is extremely difficult for protein to get stored as fat. I think the only downside to too much protein would be that it prevents ketosis and might have questionable health consequences.

http://www.bodyrecomposition.com/nutrition/excess-protein-and-fat-storage-qa.html
http://www.bodyrecomposition.com/nutrition/protein-controversies.html

None. Percents are not the best to go by.

1g of protein per lb of lean body mass
.35x body weight for g of fat
rest in whatever you like(carbs!! yumm. Or more pro and fat)

This.

Although each person should figure out their own g/lb of lbm for each. You can eat much more protein than 1g/lb of lbm. I'd suggest increasing protein instead of eating the balance in carbs.

Protein helps satiety and helps build muscle -- two things sure to have a positive impact on the composition of your body.

What percentage distribution of macronutrients for what purpose? Good health, weight loss, management of disease (like diabetes), etc. The answers to the basic question changes with the state of the body and the goals of the person asking the question.

I've noticed that answers are all over the place. For good health and maintenance and repair of body tissues the official, medical recommendation is .8 grams of protein per KILOGRAM of body weight. A kilogram is 2.2 lb. This rec. is generally considered to be generous. It usually will work out to about 15% of daily calories. When dieting, to preserve lean body mass and manage hunger, a little more helps, 20 - 25%. If training to build muscle mass you need a small amount more.

This. I talked to a sports nutritionist that said high protein diets are unnecessary. The key is to eat enough carbs so that your body uses the protein and fat you eat for what it needs to use them for, rather than having to burn them for energy, which not only takes longer, but is less efficient, and cuts down on the actual amount of usable fat and protein for muscle, skin, bone, tendon, hair, and tooth repair, as well as hormone synthesis. The other thing, since protein and fat take so much longer o burn for energy than carbs, your body will burn less adipose fat for energy, as it can sustain itself longer on protein and dietary fat. Eating a generous amount of carbs allows the body to burn those for energy, and then switch over to adipose tissue, since by then, the protein and fat is already being used for repair and maintenance, and is no longer available for energy. He recommended 50/25/25 carbs/protein/fat, but personally I eat 45/25/30 carbs/protein/fat.

ha, i guess i'll repost, since after the other comments. .8g of protein per LBM, carbs < 30g. pad the rest of your calories with fat.

Why is this the best?

Well it's the best for fat loss. Due to the fact your body will use it's fat for energy. Sure you can lose fat with higher carb diet, but it takes more work. Other methods you have to burn through the sugar(carbs) first, before you get to the fat,unless you're doing low intensity training. This method, you don't. There are many studies that conclude this is the fastest weight loss method, the body behaves as it's starving, but you're eating food, besides that all the metabolic pathways are the same, except insulin is slightly elevated compared to starvation.

Long term studies have shown NO advantage to low-carb diets. Period.

Yes this is a low carb diet. This doesn't mean it's a "high protein diet." It's normal protein. People consume too much protein usually. Which in tern gets converted to glucose, which easily get stored as fat. As i mentioned already .80g of protein per lbs of LBM. OR MINIMUM 150g of protein. This prevents nitrogen loss. If anyone has a problem with this, don't debate with me, debate with lyle mcdonald.

I dare you to post this on Lyle's forum.

http://forums.lylemcdonald.com/index.php

Looking forward to seeing you get eviscerated.

increasing protein can be counter productive to fat loss

Stop making things up.

Come on Ron you're smarter than this.

Actually it is extremely difficult for protein to get stored as fat. I think the only downside to too much protein would be that it prevents ketosis and might have questionable health consequences.

http://www.bodyrecomposition.com/nutrition/excess-protein-and-fat-storage-qa.html
http://www.bodyrecomposition.com/nutrition/protein-controversies.html

It's not that "difficult." Gluconeogenesis converts the protein to glucose, and then the glucose gets converted to glycerol. It's just an extra step compared to carbs.

ha, i guess i'll repost, since after the other comments. .8g of protein per LBM, carbs < 30g. pad the rest of your calories with fat.

Why is this the best?

Well it's the best for fat loss. Due to the fact your body will use it's fat for energy. Sure you can lose fat with higher carb diet, but it takes more work. Other methods you have to burn through the sugar(carbs) first, before you get to the fat,unless you're doing low intensity training. This method, you don't. There are many studies that conclude this is the fastest weight loss method, the body behaves as it's starving, but you're eating food, besides that all the metabolic pathways are the same, except insulin is slightly elevated compared to starvation.

Long term studies have shown NO advantage to low-carb diets. Period.

Yes this is a low carb diet. This doesn't mean it's a "high protein diet." It's normal protein. People consume too much protein usually. Which in tern gets converted to glucose, which easily get stored as fat. As i mentioned already .80g of protein per lbs of LBM. OR MINIMUM 150g of protein. This prevents nitrogen loss. If anyone has a problem with this, don't debate with me, debate with lyle mcdonald.

I dare you to post this on Lyle's forum.

http://forums.lylemcdonald.com/index.php

Looking forward to seeing you get eviscerated.

increasing protein can be counter productive to fat loss

Stop making things up.

Come on Ron you're smarter than this.

Actually it is extremely difficult for protein to get stored as fat. I think the only downside to too much protein would be that it prevents ketosis and might have questionable health consequences.

http://www.bodyrecomposition.com/nutrition/excess-protein-and-fat-storage-qa.html
http://www.bodyrecomposition.com/nutrition/protein-controversies.html

One of the questionable consequences is that too much protein is bloating you up. Try 20 jumping jacks

My macros are set to 45/25/30. I am a long distance runner so the slightly higher carb percentage helps keep my run fueled, and the lower fat % helps me keep from getting GI issues.

When it comes to the macros, sometimes you have to play with it to find the right balance that works for you.