Should we eat Insects?

Episode Summary

Executive Summary: The episode investigates whether insects can be a serious food source, focusing on Burkina Faso’s shea caterpillars as a nutritious, culturally accepted, and potentially scalable protein. It weighs environmental benefits, economic opportunities for women, and research challenges around breeding, feed, and year-round production, concluding that insects can matter significantly—but only with sustainable, context-specific systems.

Main Topics: Insects as food: global and cultural context (Priority: 5/5): The programme opens by framing insect eating as common in many regions, from Burkina Faso to Cambodia and Japan, and challenges the idea that eating insects is inherently strange or fringe. Nutritional value and food security (Priority: 5/5): Experts explain that edible insects can provide substantial protein as well as iron and zinc, making them particularly relevant in places affected by malnutrition and hidden hunger. Burkina Faso’s shea caterpillar economy (Priority: 5/5): Entrepreneur Kahit Ien’s Faso Pro shows how harvested caterpillars are collected, processed, seasoned, packaged, and sold, creating income and local jobs, especially for women. Scientific research on breeding and feed (Priority: 5/5): Researchers in Burkina Faso and the UK are studying caterpillar life cycles, wild diet, and chemical cues to develop year-round breeding and better feed systems. Environmental promise and its limits (Priority: 4/5): The episode argues insect farming can have a lower environmental footprint than livestock, but only if feed inputs and production conditions are sustainable; otherwise the benefits shrink. Women, livelihoods, and local development (Priority: 4/5): Local women collect and sell caterpillars, earning important seasonal income, and many welcome the idea of backyard caterpillar farming as a way to improve food and earnings. Scaling from tradition to industry (Priority: 4/5): The programme explores whether a traditional seasonal food can become a reliable, scalable protein industry without losing its local sustainability and social benefits.

Key Arguments: Insects are already a major food source globally, with at least 2 billion people eating them, so they are not an exotic outlier but an established part of diets worldwide. Insects can be highly nutritious, especially as sources of protein, iron, and zinc, and may help reduce micronutrient deficiencies linked to poverty and poor child development. Compared with livestock, insect farming may require less land and feed and produce fewer emissions, making it potentially more environmentally friendly. Burkina Faso’s shea caterpillars are economically important because they are already popular and marketable, creating demand for processed insect products. A major obstacle is seasonality: shea caterpillars are only available for a short rainy-season window, so year-round supply requires breeding breakthroughs. Current commercial insect farming can be less sustainable than advertised if insects are fed chicken feed, often soy-based and imported, undermining environmental claims. A viable insect industry must be locally adapted, using feed and breeding methods that smallholder farmers and women can realistically adopt in backyards or small structures. Local women stand to benefit most because caterpillars already contribute significantly to their food security and income, sometimes more than shea nuts or shea butter.

Data Points: People consuming insects worldwide: at least 2 billion - UN estimate cited to show insect eating is already widespread Edible insect species: 2,000 to 2,500 - Professor Antoine Sanon’s estimate of edible insect species globally Feed efficiency compared with cattle: up to 10 times less food - Insects may need far less food than cattle to produce protein Global population by 2050: 9 billion - Used to highlight future food demand pressures Required increase in food production by 2050: 70% - UN estimate of the scale of needed growth in food production Annual caterpillar sales: 10 tonnes per year - Kahit Ien’s Faso Pro sales volume in Burkina Faso Caterpillar stock in factory room: about 1 ton - Kahit’s storage room inventory during the factory tour Weight of a box of caterpillars: 5 kilos - Estimated by the hosts while touring the storage area Caterpillar underground life stage: 9 months - Charlotte Payne explains the caterpillars spend most of the year underground as pupae Seasonal availability: a couple of months - Caterpillars are only available for harvesting during the rainy season Drive time to field site: 6 hours - Travel from Ouagadougou to the village of Sumosso Collection time in villages: 2 in the morning - Women and children wake early with torches to harvest caterpillars Threshold for local income impact: more than other shea products - Charlotte reports women often earn more from caterpillars than from shea nuts or shea butter

Pivotal Quotes: "If we replaced meat with insects, we could reclaim land that's used for animals. Cut down on greenhouse gas emissions from the rear ends of livestock." — Presenter narration: Summarizing the environmental argument for insect protein "They make a lot of money from the caterpillars even more so than they make from the other products that they collect from the shea trees such as the shea nuts and the shea butter." — Charlotte Payne: Explaining the economic importance of caterpillars for local women "We are trying to develop a way that is scalable so that it can be practiced by smallholder farmers by people like these women in their backyards." — Charlotte Payne: Describing the goal of creating practical year-round breeding systems

Implications: Insects could be a serious food source where they are culturally accepted, nutritionally valuable, and locally sustainable, but they are not a universal fix. Real impact depends on better feed, breeding, and systems that support small farmers and women.