Nutrition has become more complicated than it needs to be.
There’s always a new rule, a new trend, or something you’re supposed to cut out completely. One week it’s carbs, the next it’s fats, then it’s sugar, then something else entirely.
It’s no surprise people end up stuck in an all-or-nothing cycle.
“The problem isn’t that people aren’t trying,” says Madeline Calfas, registered nurse and nutritionist. “It’s that they’re following advice that isn’t always accurate or sustainable.”
When you strip it back, a lot of the most common “rules” around food don’t hold up.
Here are a few that tend to cause more confusion than clarity.
Fat isn’t the problem
For years, fat was labelled as something to avoid.
That thinking still lingers, even though we now know it’s not that simple.
“The idea that fat is bad for you came from outdated messaging,” Madeline explains. “When fat was removed from foods, it was often replaced with sugar to improve taste.”
The issue isn’t fat itself, it’s the type.
Healthy fats from sources like olive oil, nuts, and fish play an important role in overall health. They also help the body absorb key nutrients.
Cutting them out completely often does more harm than good.
There’s no universal rule for water intake
The “eight glasses a day” rule is one of the most repeated pieces of advice, but it doesn’t take individual needs into account.
Hydration varies depending on body size, activity levels, and environment.
“There isn’t a one-size-fits-all number,” says Madeline. “A more practical way to assess hydration is by looking at your urine colour throughout the day.”
It’s a simple check, but often more useful than trying to hit an arbitrary target.
Dairy isn’t the only source of calcium
A lot of people still associate calcium almost exclusively with dairy.
While dairy does contain calcium, it’s not the only option.
“There are plenty of non-dairy sources that provide what you need,” Madeline explains. “Leafy greens and certain types of fish are good examples.”
This is particularly relevant for those who don’t tolerate dairy well, or choose not to include it in their diet.
Salt isn’t something to eliminate completely
Salt tends to get grouped into the “avoid” category, but it plays a role in how the body functions.
“Sodium is essential for fluid balance and nerve function,” says Madeline. “The issue is usually excess, not the presence of it.”
Completely cutting it out isn’t the goal. It’s about balance and being mindful of how much is coming from processed foods.
Juice cleanses aren’t a long-term solution
Juice cleanses are often marketed as a reset.
And while they might seem appealing, they’re not always doing what people think.
“There can be some benefit in giving the digestive system a break,” Madeline says. “But it depends on what you’re actually consuming.”
Many juice cleanses are high in fruit sugars, which can work against what you’re trying to achieve.
“A single glass of fruit juice can contain a significant amount of sugar,” she explains. “If you’re relying on that alone for days, it’s not balanced.”
If juices are included, leaning towards vegetable-based options tends to be more supportive.
The number on the scale doesn’t define health
Weight is often used as a marker of progress, but it doesn’t tell the full story.
“The scale doesn’t reflect overall health,” says Madeline. “You can reach a certain number and still not be supporting your body properly.”
Energy levels, nutrient intake, and how your body is functioning day to day are far more relevant indicators.
What actually matters
Most of these “rules” come from trying to simplify something that isn’t meant to be rigid.
Nutrition isn’t about extremes or constant restriction.
“It comes back to balance and consistency,” says Madeline. “What you’re doing most of the time is what makes the difference.”
A more flexible, realistic approach tends to be the one people can actually maintain.
And that’s usually where the real results come from.
