But you wouldn't know it to look at a newspaper.
Is pointing out the negative health effects of overweight and obesity "fat shaming"?
Evidence shows fat-shaming health campaigns have little effect on promoting healthy lifestyles and weight loss among fat people.
We're used to categorising people as "male" or "female" – but that's no excuse for lashing out when athletes defy our expectations.
There's no protection from size discrimination in UK law, but European disability law may offer some comfort.
Dear Fat People video goes viral but it's another sad example of how acceptable it has become to belittle people while pretending it's for their own good.