The claim that advertising does more harm than good has intuitive appeal to anyone irritated by the constant pressure to buy, yet it risks condemning a whole practice for the faults of some of its forms. By "harm" I mean damage to people's wellbeing, to honest information and to privacy, and by "good" the value advertising adds in informing choices and sustaining other goods such as free media. This essay argues that advertising in itself does more good than harm, but that specific, identifiable practices within it are genuinely harmful — which is why the sensible response is regulation rather than wholesale rejection.
The strongest case for advertising's value is that it informs and that it pays for things society relies on. Advertising tells consumers what products exist, at what prices and with what features, allowing more informed choices in a competitive market; without it, smaller and newer businesses would struggle to reach anyone. More importantly, advertising funds an enormous amount of "free" media — journalism, broadcasting and online content that audiences enjoy without paying directly, captured in the saying that "if you're not paying, you're the product". A great deal of the information and entertainment on which modern life depends is, in effect, a gift from advertisers. To call all of this net harm is to ignore a benefit most people use every day.
Nonetheless, the harms are real and must be faced honestly. The most serious is the effect on wellbeing, particularly body image: idealised and digitally altered images in advertising present standards of appearance that are unattainable for almost everyone, and are widely linked to anxiety and low self-esteem among young people. A second harm is the erosion of honesty. Influencer marketing blurs the line between genuine recommendation and paid promotion, which is precisely why regulators now require influencers to label paid posts as advertising; "native advertising" or advertorials, designed to look like ordinary content, exploit the same confusion. A third harm is the assault on privacy through targeted advertising, where platforms track users' behaviour to aim adverts at them, treating personal data as a commodity.
The decisive question is whether these harms are intrinsic to advertising or the product of particular practices. The evidence suggests the latter. None of the harms above follows from advertising as such; each flows from deception, manipulation or surveillance — features that can be, and increasingly are, restrained. The UK's Advertising Standards Authority requires adverts to be "legal, decent, honest and truthful" and can order misleading ones withdrawn, while disclosure rules force paid influencer content into the open. Harmful advertising is therefore a regulable abuse, not the essence of the activity.
It might be objected that this distinction is naive, because the funding model itself drives the harms: since advertisers pay for attention, the system rewards whatever captures attention most effectively — the sensational, the manipulative, the relentlessly aspirational. There is real force in this; the good and the harm do flow from the same source. Yet this argues for shaping the model through regulation, transparency and media literacy, not for the impossible task of abolishing advertising in a market economy. A practice with such large benefits is not made net-harmful by abuses that can be curbed.
In conclusion, I disagree that advertising does more harm than good, though only with an important qualification. Judged by its overall contribution — informing consumers and funding the free media society depends on — advertising does more good than harm; but judged by specific practices such as undisclosed promotion, the cultivation of damaging body ideals and intrusive data collection, it can do serious harm. The right response is not to reject advertising but to hold it to the standards of honesty and proportion that bodies like the ASA already represent.