Many lifters searching for a 2026 ISSN protein recommendation first land in library records. There, ISSN stands for International Standard Serial Number, a standard identifier for periodicals such as magazines. That system exists for ordering, cataloging, and interlibrary loans, not for issuing dietary guidance. For daily protein targets, the public health figures that can be used inside a TDEE calculator come from the National Academy of Medicine and the Dietary Guidelines for Americans 2025–2030.
What the ISSN search actually returns
According to the U.S. ISSN Center, the ISSN is a standard identifier for serials such as journals, magazines, newsletters, newspapers, and annuals, whether published in print, online, or other media. That means a search for ISSN protein guidelines can lead to journal records rather than nutrient recommendations. If you expected a sports nutrition position stand from the International Society of Sports Nutrition, that organization’s own publications are the place to look; the ISSN identifier does not publish protein recommendations.
Protein ranges the published sources support
Healthline reports that the Dietary Guidelines for Americans 2025–2030 recommend 1.2 to 1.6 grams of protein per kilogram of body weight each day. Harvard T.H. Chan School of Public Health notes the National Academy of Medicine recommends a minimum of 0.8 grams per kilogram, with an acceptable protein range of 10 to 35 percent of daily calories. For illustration, Harvard gives roughly 50 grams for a 140-pound person and roughly 70 grams for a 200-pound person at that minimum. The 1.2–1.6 gram range is therefore above the minimum and useful when training volume is high.
Translating protein grams into calculator percentages
A TDEE calculator first estimates basal metabolic rate and multiplies it by an activity multiplier to produce total daily energy expenditure. You can then view the calculator’s macro breakdown as percentages and gram amounts. Since the acceptable protein range is 10 to 35 percent of calories, set the protein percentage until the grams fall within your selected bodyweight-based range. If the displayed percentage sits below 10 or above 35, the total calories may need adjustment. There is no need to calculate grams per pound manually; the calculator does the conversion after you enter weight and activity level.
Cutting and maintenance adjustments
During a cut, keeping protein at the higher end helps preserve muscle while calories fall. Healthline notes that eating enough protein can help keep you feeling full and satisfied; Medical News Today similarly says high-protein foods can help with muscle building and feeling fuller after eating. In a deficit, reduce calories from fat and carbohydrate while keeping protein grams stable. Lean animal proteins such as skinless chicken breast and tuna, and plant options such as lentils, chickpeas, and soy products like tofu and tempeh, are practical ways to hit the target without excessive fat. For maintenance, keep the same protein target and energy balance, with macros kept inside the 10–35 percent protein range.
Name days and social treats
Social events can make protein and calorie targets harder. If you want to check whose Swedish name day it is, the Swedish-language resource Namnsdag lists today’s names and a full calendar. Rather than treating a name-day coffee or pastry as an unplanned extra, reserve its approximate macros in your daily protein and calorie budget before the celebration. The same principle works for any restaurant meal: set the treat first, then build the rest of the day’s protein around it.
A practical starting point
Set your maintenance calories first in a TDEE calculator. Choose a protein target between 1.2 and 1.6 grams per kilogram, keep it inside the 10–35 percent protein range, and adjust total calories above maintenance for muscle gain, below for cutting, or at maintenance to hold weight. Recheck your grams after any large change in body weight or activity level. None of this needs a novel nutrition standard; it needs the calculator, a bodyweight-based protein range, and a consistent way to handle treats.