The Short Answer
Calories measure energy.
Macronutrients, or macros, are the main nutrients that provide energy and perform important functions in the body:
- Protein
- Carbohydrates
- Fat
Understanding both can help you build a useful diet without becoming obsessed with numbers.
Calories
Calories are a unit used to describe energy.
If you consistently consume more energy than your body uses, body weight tends to increase over time.
If you consistently consume less, body weight tends to decrease.
However, short-term scale changes are influenced by water, glycogen and digestive contents too.
Protein
Protein provides amino acids needed for:
- Muscle repair
- Muscle growth
- Tissue maintenance
- Many other biological functions
People who train regularly often benefit from paying particular attention to protein intake.
A commonly used evidence-based range for exercising individuals is around 1.4 to 2.0 g/kg/day, although individual needs vary.
Carbohydrates
Carbohydrates provide energy and are particularly useful for higher-intensity physical activity.
Sources include:
- Rice
- Roti
- Oats
- Potatoes
- Fruits
- Pulses
- Whole grains
Carbohydrates are not inherently fattening.
Total energy intake and overall dietary pattern matter.
Fat
Dietary fat supports:
- Cell membranes
- Hormone-related processes
- Absorption of fat-soluble vitamins
- Energy intake
Useful sources include:
- Nuts
- Seeds
- Dairy
- Eggs
- Fish
- Oils
- Avocado
Do You Need to Track Macros?
Not necessarily.
Some people find tracking useful.
Others can make progress by focusing on:
- Appropriate portions
- Protein-rich foods
- Vegetables and fruit
- Whole or minimally processed foods
- Overall calorie intake
The best approach is the one that helps you manage your diet without making eating unnecessarily complicated.
Key Takeaways
- Calories describe how much energy you consume. Macros describe the major nutrients providing that energy.
- You do not need perfect macro ratios to eat well.