Question 1

What are macronutrients?

Accepted Answer

Macronutrients are the three main nutrient groups that provide energy: protein (4 kcal/g), carbohydrates (4 kcal/g), and fat (9 kcal/g). Each plays distinct roles — protein builds and repairs tissue, carbs fuel exercise, fat supports hormones and fat-soluble vitamins.

Question 2

How much protein do I need per day?

Accepted Answer

Evidence supports 1.6–2.2 g of protein per kg of body weight per day for people doing resistance training. Sedentary adults need less (~0.8 g/kg, the RDA). Higher protein preserves muscle during calorie deficits and supports muscle growth during surpluses.

Question 3

What macro split is best for fat loss?

Accepted Answer

Higher protein (30–35% of calories) preserves muscle during a cut. Lower carbs (35–40%) reduce insulin and glycogen storage. Moderate fat (25–30%) supports hormones. A common fat-loss split: 35% protein / 35% carbs / 30% fat. Adjust based on your food preferences and training.

Question 4

Do I need to track macros precisely?

Accepted Answer

Precise tracking is most useful for competitive athletes and bodybuilders. For general fat loss or muscle gain, hitting your protein target is most important; total calories matter most. Studies show protein is the macro with the strongest impact on body composition outcomes.

Question 5

Should I consult a dietitian about my macros?

Accepted Answer

Yes for medical or competitive scenarios. A registered dietitian can design a macro plan that accounts for your training schedule, food preferences, digestive health, and any conditions like diabetes or kidney disease that affect protein recommendations.

Macro Calculator