Food Waste Causes America Over Purchasing Research

Expectation: Food waste remains prevalent in America due to over-purchasing at the consumer level.

Observation: Retailers incentivize bulk purchasing, and typical food packaging is often designed for multiple servings, which leads to surplus food being prepared and wasted. Additional factors include consumers’ inability to manage perishable goods effectively and cultural attitudes favoring abundance over sustainability.

Stancu et al. (2016) emphasize that over-purchasing is a significant behavioral driver of food waste, rooted in psychological factors such as optimism bias. Consumers frequently overestimate their ability to prepare and consume the food they purchase, leading to a mismatch between their intentions and actual behavior. For instance, shoppers may buy large quantities of fresh produce or perishable goods, assuming they will cook elaborate meals or eat healthier, but later discard these items due to spoilage. This disconnect between aspirations and practical realities highlights the role of consumer overconfidence in driving over-purchasing and subsequent waste.

Retailer marketing strategies exacerbate these tendencies by framing bulk purchases as economically advantageous. Promotions like “buy one, get one free” or significant discounts on larger quantities create an illusion of saving money, even if the consumer does not need the extra food. This perceived economic value encourages over-purchasing, as consumers prioritize short-term financial savings over long-term usability. However, as the research suggests, these promotions often produce surplus food in households, which is discarded before consumption. The household-level impact of these behaviors becomes evident in accumulated waste that could have been avoided with more restrained purchasing habits.

Principato et al. (2021) expand this discussion with the examination of how household practices interact with purchasing decisions to produce waste. The researchers note that many consumers struggle to effectively manage and store the larger quantities of food resulting from bulk purchases. Limited storage capacity, particularly for perishables, results in spoilage that could have been prevented with better planning or smaller purchases. Additionally, promotional activities emphasizing large food parcel sizes further disconnect consumer buying patterns from actual consumption needs. These insights reinforce the argument that over-purchasing significantly contributes to household food waste, with both behavioral and structural factors playing pivotal roles.

Carolan (2021) identifies structural and cultural factors that normalize over-purchasing. Retailers often market “family-sized” packaging and bulk deals to align with cultural norms of abundance, especially in Western societies. These norms equate plentiful food with prosperity and security, encouraging consumers to buy more than necessary. Carolan (2021) also highlights how normalizing waste within these cultures allows consumers to view unused food as an inevitable or acceptable byproduct of their purchasing habits. This cultural lens reduces the perceived urgency to address waste at the household level.

Aschemann?Witzel et al. (2023) delve into how pricing strategies, such as discounts on bulk purchases, incentivize over-purchasing among deal-prone consumers. These strategies shift the focus from actual needs to perceived savings, where consumers prioritize financial benefits over practical consumption. For instance, “two for the price of one” deals often lead to households acquiring more food than they can consume. This surplus frequently results in spoilage, especially for perishable items. Moreover, retailers indirectly transfer responsibility for waste management to consumers, who may not have the means or knowledge to prevent waste. This interplay between retail practices and cultural norms reinforces over-purchasing and amplifies household-level food waste.

Schanes et al. (2018) underscore the critical role of policy interventions in mitigating food waste driven by over-purchasing. They argue that many consumers are unaware of the broader environmental and economic consequences of their wasteful behaviors, such as the carbon footprint of discarded food. Educating consumers on portion sizes, practical meal planning, and proper storage techniques can significantly reduce waste. For example, providing clear guidance on interpreting “best by” and “sell by” labels can prevent premature disposal of edible food.

Policy initiatives could also target retailer practices, such as promoting smaller package sizes or offering discounts on single units rather than bulk deals. Campaigns encouraging a cultural shift from abundance to sustainability could help realign consumer priorities toward minimizing waste. Schanes et al. (2018) emphasize that addressing over-purchasing requires a multifaceted approach, combining consumer education, retail policy changes, and cultural shifts to create a lasting impact.