Question about daily protein and sugar goals
_lyndseybrooke_
Posts: 2,561 Member
Is eating more protein than your MFP goal harmful to weight loss? My goal is 55g and I typically eat 75-80g. I don't use any protein supplements. I do some strength training 4 days a week for 30 minutes each time, but I'm not using heavy weights, if that matters.
As for sugar, my goal is set at 30g, but eating a banana at breakfast and an apple as a snack exceeds that number. If my foods with a lot of sugar are fruits, will it really hinder my weight loss?
As for sugar, my goal is set at 30g, but eating a banana at breakfast and an apple as a snack exceeds that number. If my foods with a lot of sugar are fruits, will it really hinder my weight loss?
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Replies
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MFP sets protein too low. To set your macros, check out this link:
http://www.myfitnesspal.com/topics/show/911011-calculating-calorie-macronutrient-needs?page=1#posts-13821336
Also, it's hard to have too much protein.
"It has been observed that the human liver cannot safely metabolise much more than 285-365 g of protein per day (for an 80 kg person), and human kidneys are similarly limited in their capability to remove urea (a byproduct of protein catabolism) from the bloodstream. Exceeding that amount results in excess levels of amino acids, ammonia (hyperammonemia), and/or urea in the bloodstream, with potentially fatal consequences,[1] especially if the person switches to a high-protein diet without giving time for the levels of his or her hepatic enzymes to upregulate. Since protein only contains 4 kcal/gram, and a typical adult human requires in excess of 1900 kcal to maintain the energy balance, it is possible to exceed the safe intake of protein if one is subjected to a high-protein diet with little or no fat or carbohydrates. However, given the lack of scientific data on the effects of high-protein diets, and the observed ability of the liver to compensate over a few days for a shift in protein intake, the US Food and Nutrition Board does not set a Tolerable Upper Limit nor upper Acceptable Macronutrient Distribution Range for protein.[2] Furthermore, medical sources such as UpToDate[3] do not include listings on this topic."
Source: http://en.wikipedia.org/wiki/Rabbit_starvation
Sugar is just a carb. As long as you're eating enough fats and protein, your carbs/sugar aren't particularly important unless you have a medical issue that requires carbs/sugar to be monitored.
However, it should be noted that fructose and sucrose can only be stored as liver glycogen and not muscle glycogen. The liver can hold 100-120g glycogen so anything more than that will be converted to triglycerides. As long as you still have a calorie deficit this will even out. Just try to make most of your carbs glucose and not sucrose or fructose. Fructose in particular has been shown to decrease exercise performance, increased likelihood of gastrointestinal distress, and increase perception of exertion.
Here are some studies:
http://www.setantacollege.com/wp-content/uploads/Journal_db/the effects of glucose....pdf
http://www.ncbi.nlm.nih.gov/pubmed/3592616
As long as you're under your calorie goal, you'll lose weight. Some people find that sugar (even from fruit) causes them to have more sugar/carb cravings so keep that in mind.0 -
If you want to know the best advice on this subject read this link below, this guy will tell you to the last gram.
http://forum.bodybuilding.com/showthread.php?t=1432959330
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