NUTRITION, FOOD SAFETY & DRUG–FOOD INTERACTIONS
Nutrition is the foundation of good health. A proper diet ensures growth, immunity, energy production, and prevention of diseases. This article covers the basics of nutrition, balanced diet, malnutrition, food safety, nutraceuticals, and important drug–food interactions in simple, student-friendly language.
Basics of Nutrition
Nutrients are substances required by the body for energy, growth, repair, and regulation of body processes. They are classified into macronutrients and micronutrients.
Macronutrients
- Carbohydrates: Primary source of energy. Examples: rice, wheat, fruits, sugar.
- Proteins: Required for growth, enzyme formation, and tissue repair. Sources: pulses, milk, eggs, fish.
- Fats: Provide concentrated energy, essential fatty acids, and help absorb fat-soluble vitamins (A, D, E, K). Sources: oils, nuts, butter.
Micronutrients
- Vitamins: Essential for immunity, metabolism, skin and eye health.
- Minerals: Needed for bones, blood formation, and nerve function.
Importance of Water and Fibre
Water constitutes 60–70% of body weight and is essential for digestion, temperature regulation, and toxin removal. Fibre helps bowel movement, prevents constipation, controls blood sugar, and reduces cholesterol.
Balanced Diet
A balanced diet includes all essential nutrients in proper proportions such as cereals, pulses, milk, fruits, vegetables, fats, and adequate water.
Malnutrition and Deficiency Diseases
- Protein-energy malnutrition: Kwashiorkor, Marasmus
- Vitamin A deficiency: Night blindness
- Iron deficiency: Anemia
- Iodine deficiency: Goiter, cretinism
- Vitamin D deficiency: Rickets, osteomalacia
Ill Effects of Junk Foods
- High sugar, salt, and unhealthy fats
- Causes obesity, diabetes, hypertension, heart disease
- Leads to fatigue and poor concentration
Calorific and Nutritive Values
Carbohydrates and proteins provide 4 kcal/g, while fats provide 9 kcal/g.
Food Fortification
- Iodized salt
- Fortified milk
- Fortified flour
Food Safety
Safe and hygienic food protects against diseases and contamination.
Food Adulteration
- Water in milk
- Artificial colours in sweets
- Chalk powder in flour
Leads to toxicity and health risks.
Artificial Ripening
Use of chemicals like calcium carbide can cause serious health issues.
Pesticides
- Cause cancer and hormonal imbalance
- Reduced by washing and cooking
Genetically Modified Foods
Provide better yield but may have long-term safety concerns.
Dietary Supplements & Nutraceuticals
Used to support health when diet is insufficient.
Dietary Supplements
- Correct deficiencies
- Boost immunity
- Improve metabolism
Nutraceuticals
Provide additional health benefits beyond nutrition.
Food Supplements
Used in special conditions like pregnancy, illness, and sports.
Drug–Food Interactions
- Grapefruit juice affects many drugs
- Milk reduces tetracycline absorption
- Green vegetables affect warfarin
- Alcohol interacts with many medicines
Summary:
Proper nutrition, food safety, and awareness of drug–food interactions are essential for maintaining health and preventing diseases. Pharmacists play an important role in guiding patients toward safe dietary and medication practices.
Frequently Asked Questions (FAQs)
1. What is a balanced diet?
A diet containing all essential nutrients in correct proportions.
2. What are nutraceuticals?
Products that provide health benefits beyond basic nutrition.
