BIO-303 Principles of Nutrition examines the biological basis of human nutrition, how the body digests, absorbs, and uses macronutrients and micronutrients, and connects that biological understanding to real health outcomes and dietary decision-making.
The biology of digestion and nutrient use
The course grounds nutrition study in genuine biology. How the digestive system breaks down food, absorbs nutrients, and how the body uses those nutrients at the cellular level. Rather than treating nutrition as a set of dietary rules disconnected from underlying biological mechanism.
Connecting nutrition science to health outcomes
BIO-303 connects this biological foundation to real health outcomes, examining how nutrient deficiency, excess, and balance actually affect the body over time.
Key topics in BIO303
- Digestion and nutrient absorption
- Macronutrients: carbohydrates, proteins, fats
- Micronutrients: vitamins and minerals
- Nutrition's role in health and disease
- Evaluating nutrition claims and evidence
- Applying nutrition science to dietary decisions
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Worked example: biology behind a dietary recommendation
- Surface-level advice: 'Eat more protein'
- Biological grounding: Understanding protein's role in cellular repair and enzyme function explains why that recommendation matters
- Lesson: BIO-303 teaches that sound nutritional decision-making requires understanding the underlying biology, not just following dietary rules
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Frequently asked questions
Dietary guidelines and recommendations only make sense in light of the underlying biology. Why protein matters for cellular repair, why certain vitamins are essential cofactors for specific bodily processes. And without that biological grounding, nutrition advice can seem arbitrary or be difficult to critically evaluate when new or conflicting claims arise. BIO-303 teaches the biology first because it equips students to genuinely understand and evaluate nutrition science, not just memorize current dietary recommendations.
Nutrition and exercise physiology are deeply connected biological systems. Nutrient intake fuels the energy systems and muscular processes examined in exercise physiology, and physical activity in turn affects nutrient needs and metabolism, so understanding one strengthens understanding of the other. A student studying both gains a fuller picture of how the body's nutritional intake and physical activity interact to shape overall health and performance.