5 Lessons from Prof Chinelo Ezeocha’s Presentation
Food is an important part of life.
It gives us energy, supports our health and brings families and communities together.
But food can also expose us to disease, damage the environment and contribute to waste when it is produced, handled or consumed irresponsibly.
On Saturday, July 25, 2026, Professor Chinelo Vanessa Ezeocha (Class of 1997), a professor of Food Science and Technology at Michael Okpara University, Umudike, delivered a presentation titled “Safe, Healthy, and Sustainable Diets” as part of DIAA’s monthly Knowledge Sharing Series.
She explained how food choices affect our health, local economy and environment.
1. A Good Diet Has Three Dimensions
Professor Ezeocha divided the subject into three connected dimensions: safe diets, healthy diets and sustainable diets.
A safe diet contains food that does not cause harm when it is prepared and consumed as intended.
A healthy diet provides the energy and nutrients the body needs. It should be balanced, varied and appropriate for a person’s age, health, activity level and physiological needs.
A sustainable diet meets our present nutritional needs without preventing future generations from meeting theirs.
These three dimensions must work together.
Food may be nutritious but unsafe because it is contaminated. It may be safe and nutritious but unsustainable because its production damages the environment or wastes scarce resources.
2. Food Safety Starts Before Food Reaches Our Plates
Food safety does not begin in the kitchen.
It starts with production and continues through harvesting, transportation, processing, storage, preparation and service.
Professor Ezeocha identified three major categories of food hazards.
Biological hazards include bacteria, viruses, parasites and fungi. Physical hazards include stones, glass, hair, insects and pieces of metal. Chemical hazards include pesticide residues, heavy metals, natural toxins and unsafe substances from processing or packaging materials.
Poor handling at any stage can turn good food into dangerous food.
She advised members to wash their hands before preparing meals, use clean water, sanitise food-contact surfaces and keep raw food separate from cooked or ready-to-eat food.
Perishable foods should be stored at safe temperatures. Meat, fish, eggs and other foods should be cooked properly. Spoiled, mouldy, expired or adulterated food should be avoided.
We can’t determine food safety by appearance alone. Food may look and smell normal and still contain harmful microorganisms or chemicals.
3. Healthy Eating Is About Balance, Variety and Moderation
The Nigerian Food Guide shared in Professor Ezeocha’s presentation.
Professor Ezeocha used the food pyramid to explain the proportions in which different food groups should be consumed.
A healthy diet should contain appropriate amounts of whole grains, roots and tubers, fruits, vegetables, protein foods, healthy fats and water.
She encouraged members to eat the rainbow by including fruits and vegetables of different colours in their meals. Different colours often represent different nutrients and protective compounds.
She also advised members to favour minimally processed foods and limit excess salt, added sugar, sweetened drinks, saturated fats, repeatedly fried foods, ultra-processed foods and excessive alcohol.
People who enjoy red meat do not necessarily have to stop eating it completely. They can choose leaner portions and reduce fatty cuts.
Palm oil contains saturated and unsaturated fats and should be used in moderation.
The lesson was simple: healthy eating is about making better food choices and avoiding excess.
4. Indigenous Foods Deserve More Attention
Pigeon pea (Fiofio), one of the indigenous Nigerian crops featured in Professor Ezeocha’s presentation.
Many Nigerians overlook indigenous foods while embracing imported or heavily processed alternatives.
Professor Ezeocha encouraged greater use of locally produced legumes, cereals, roots, tubers, fruits and vegetables.
Foods such as pigeon pea and African yam bean can provide valuable nutrients, support local farmers and reduce the environmental costs associated with transporting food over long distances.
She also spoke about collaborative research to improve the nutritional quality, cooking time and attractiveness of products made from underutilised indigenous crops.
Supporting local food improves our diets.
It also creates economic opportunities for farmers, preserves biodiversity and protects valuable food knowledge that could otherwise disappear.
5. Food Waste and Sustainable Eating Require Us to Think Beyond Ourselves
Food waste goes beyond throwing away leftovers.
Food may be lost during harvesting, transportation, storage, processing and marketing before it reaches the consumer.
Unreliable electricity worsens the problem in Nigeria. Traders and households may lose meat, fish, vegetables and other perishable foods because they cannot keep them at safe temperatures.
Better harvesting methods, improved storage, reliable electricity, meal planning and sensible portion control can reduce food loss and waste.
Leftovers should be stored and reheated safely or put to productive use where possible.
When we waste food, we also waste the land, water, energy, labour and money used to produce it.
Memorable Quote from the Presentation
“Food must not just be available. It must be safe, nutritious, affordable, and produced in ways that protect the environment.”
For twenty-five years, from 2000 to 2025, Dority International Early Learning School has held the distinction of being the top-performing secondary school in Nigeria in the Senior School Certificate Examination (Internal) conducted by the National Examinations Council (NECO).