These days, it's even easier to share them in our Facebook feeds and they can reach a much wider audience.
Soon they have enough momentum that everyone from your mum to the trainer at the gym is recommending them. Evidence doesn't come into it.
Cinnamon on top of your cappuccino or cereal is not harmful, but a tablespoon of cinnamon every day for three months could be. And you still won't have lost weight
Care is needed, though. Online, everyone can be an expert and because we are vulnerable to "truthiness" - things that sound plausible and have a ring of truth to them - we're not so good at interpreting which experts are credible and which are making it up as they go along.
And why should we have to? We are bombarded with information all day. How much more time-consuming is it to evaluate the source of every new snippet? Yet when it comes to health and nutrition, we probably should be more circumspect.
It does us no good to share every "new" breakthrough that comes along. It simply adds to the confusion about something which is simple: our basic care and feeding.
It may not surprise you to know that honey and cinnamon is not a magic weight-loss elixir. Honey and cinnamon have potentially beneficial properties, although the evidence is mixed, particularly with cinnamon.
More concerning is that it has potential harmful effects. A common type of cinnamon - cassia cinnamon - can contain large amounts of a chemical called coumarin. In people who are sensitive, coumarin might cause or worsen liver disease.
It also has potentially harmful interactions with other herbs and some prescription drugs. So cinnamon on top of your cappuccino or cereal is not harmful, but a tablespoon of cinnamon every day for three months could be. And you still won't have lost weight.
Niki Bezzant is editor in chief of Healthy Food Guide