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The Fundamentals of Healthy Eating

Key Components of a Healthy Diet

A healthy diet balances the energy (calories) ingested daily with the energy expended, a concept known as energy balance.
Macronutrients: Include proteins, fats, and carbohydrates. The appropriate ratio for each person depends on individual health goals and needs.
Micronutrients: Essential vitamins and minerals, along with beneficial compounds like phytochemicals found in whole foods. Bioavailability varies between plant and animal sources.
Minimize consumption of ultra-processed foods as they tend to be low in nutrient density and high in calories. Healthy dietary patterns are generally low in ultra-processed foods.

Energy Balance: Refers to the equilibrium between calories consumed and calories burned. Maintaining this balance is key to weight management.
Calories: Essential for bodily functions and activities. The source of calories matters; a calorie is a unit of measurement, but its effect on the body varies based on its source (e.g., French fries vs. eggs).
Methods to Estimate Calorie Needs:
Mifflin-St Jeor Method: Uses weight, height, age, and gender to calculate Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE).
Weight by 15 Method: A quick estimate by multiplying body weight by 15 to gauge daily calorie needs for energy balance.
Food Journal Method: Tracking daily intake to estimate calorie needs if weight is stable.

Proteins:
Vital for building and repairing tissues, creating enzymes and hormones.
Protein Quality: Determined by amino acid content and digestibility.
Digestibility Scores:
- PDCAAS (Protein Digestibility Corrected Amino Acid Score): Measures how well protein is absorbed.
- DIAAS (Digestible Indispensable Amino Acid Score): A newer, more accurate measure showing that animal proteins are highly digestible.
Carbohydrates:
Provide energy; quality matters more than quantity.
Favor whole foods (fruits, vegetables) over processed carbs to maintain health.
Fats:
Essential for absorbing fat-soluble vitamins (A, D, E, K) and providing satiety.
Focus on whole food sources of fat rather than added fats.

Micronutrient Deficiency: 90% of Americans are deficient in at least one essential micronutrient.
Sources:
Animal products generally offer more bioavailable forms of vitamins and minerals.
Plant sources are valuable, particularly for specific nutrients like magnesium found in dark leafy greens and almonds.
Magnesium: Critical for hundreds of bodily processes, including DNA repair and energy production.

Satiety: A key feature of a healthful diet that helps in weight management by promoting fullness with fewer calories.
Three Satiety Superstars:
Protein: The most satiating macronutrient. Encourages fullness and reduces overeating.
Fiber: Slows digestion, expands in the stomach, and reduces hunger hormones like ghrelin.
Water: Drinking water before meals can reduce calorie intake; hydration also plays a role in reducing perceived hunger.

Benefits of Fiber:
Helps manage blood sugar levels by slowing carbohydrate absorption.
Reduces inflammation and supports gut health by promoting beneficial bacteria.
Assists in lipid and hormone balance by trapping certain compounds like estrogen and cholesterol.
Increasing Fiber Intake: Should be done gradually to allow the gut microbiome to adapt.

A healthful diet is not one-size-fits-all but should be customized based on individual needs and goals.
Focusing on whole, minimally processed foods rich in protein, fiber, and water can optimize satiety and nutritional intake.
Understanding macronutrient and micronutrient requirements is crucial for long-term health and wellbeing.

DANTE SISOFO · · dantesisofo.com/the-fundamentals-of-healthy-eating/