Dr Sayed Elhoushy: Stop Telling People to Change - What Sustainability Marketing Gets Wrong About Behaviour
Marketers love behaviour change, and it’s baked into the profession. Every campaign, every funnel, every piece of messaging ultimately aims to influence what people think, feel, or do.
But sustainability marketing has often misunderstood what meaningful behaviour change actually requires.
Sustainability marketing is more than changing behaviours
Too often, sustainability marketing defaults to instructions such as, use less, buy differently, travel less, and consume responsibly.
The logic is straightforward in that if people change, systems improve.
But as Dr Sayed Elhoushy argues, this framing misses something crucial. People do not make decisions in isolation; they make them within systems designed to shape those decisions.
Unless we change those systems, behaviour-focused sustainability campaigns will keep underperforming.
The “blame the household” trap
Food waste offers one of the clearest examples, where households are often identified as the biggest source of consumer-level food waste.
This has led to endless campaigns focused on better planning, smarter shopping, improved storage, and creativity with leftovers
These might be useful, but nowhere near sufficient.
Sayed’s work with residents in Tower Hamlets revealed that many people already want to waste less. They feel bad when food is discarded.
The issue is rarely indifference; it’s friction.
- Promotional structures encourage overbuying
- Packaging sizes exceed realistic household needs
- Retail environments reward quantity over sufficiency
The waste happens downstream, the design happens upstream, and that distinction changes everything.
Sustainability often feels abstract
One reason many sustainability campaigns fail is that they communicate globally to people who live locally. Messages framed around “saving the planet” often struggle because they lack immediate relevance.
The problem feels too large, distant, complex and uncontrollable.
Sayed emphasises the need for localisation and personalisation as people engage when sustainability becomes tangible:
- The waste in their kitchen.
- The flood on their street.
- The supermarket queue shaped by overtourism.
The challenge for marketers is translating planetary complexity into human immediacy.
Design for easier decisions
The most effective sustainability interventions often remove decision complexity altogether.
Stroodles edible tableware doesn’t ask consumers to evaluate sustainability trade-offs; it eliminates the trade-off.
This reflects an essential shift in mindset:
- Instead of asking: “How do we persuade people to make better choices?”
- Ask: “How do we redesign the system so better choices happen naturally?”
That’s a radically more effective behavioural strategy.
Beyond campaign thinking
Sustainability marketing has to mature as behaviour change cannot live solely inside communications teams.
It must connect with:
- Product design
- Operations
- Supply chain
- Commercial strategy
- Customer experience
Otherwise, campaigns become performative overlays on unchanged systems, and consumers notice.
What marketers should do differently
Three questions can transform sustainability communication:
1. What friction are we ignoring?
If people aren’t changing, look beyond motivation, examine structural barriers.
2. Are we asking too much cognitive effort?
Decision fatigue kills sustainable action - simplify.
3. Can we redesign rather than persuade?
The highest-leverage intervention is often systemic - not communicative.
The future belongs to marketers who understand this, not as message creators, but as architects of behavioural ecosystems.








