Diets high in healthy fats are all the rage, but you can have too much of a good thing.
More people are eating fats, especially ‘good’ fats like avocados and eggs, due to the increasing popularity of the ketogenic diet, Kim Kardashian‘s lifestyle of choice which cuts down on carbs in favor of more protein and, of course, ‘good’ fat.
Studies have even shown there are many health benefits including improved memory and a longer lifespan.
However, speaking with Daily Mail Online, registered dietitian-nutritionist Vanessa Rissetto warns this new trend isn’t all that it’s cracked up to be, and there are some rules you need to play by to reap the benefits.
Nutritionist-dietitian Vanessa Rissetto said people should be eating a quarter of an avocado per meal
What is the difference between ‘good’ and ‘bad’ fats?
Not all fats are created equal.
People are told to avoid trans and saturated fats, which are often found in french fries, cake mixes and margarine, because they raise low-density lipoprotein levels, or ‘bad’ cholesterol, which increases the risk of heart disease and heart attacks.
Low-density lipoprotein collects in the walls of the arteries, causing them to harden and narrow, or atherosclerosis. People with this condition are vulnerable to heart failure, heart attack, stroke and other problems caused by clogged arteries.
Meanwhile monounsaturated fats and polyunsaturated fats, which are found in avocado and salmon, respectively, are dubbed ‘good’ fats.
This is because they reduce low-density lipoprotein levels and raise high-density lipoproteins, or the ‘good’ cholesterol.
Saturated fats can also raise high-density lipoproteins, but American Heart Association recommends limiting these fats since they also raise ‘bad’ cholesterol.
According to the American Heart Association, this form of cholesterol protects against heart attack and stroke. Experts believe it acts as a ‘scavenger’ by seeking out and carrying ‘bad’ cholesterol away from the arteries and back to the liver where it’s broken down.
This is why many believe these types of fat are better for the heart.
Too much ‘good’ fat is bad for you
However, Rissetto said this doesn’t give people a license to overindulge on healthy fats.
‘Fat is fat is fat,’ said Rissetto, explaining that fat, whether good or bad, can be incorporated in a balanced diet. ‘There’s nothing wrong with eating fat, it’s all about proportion.’
This means eating a lot of fat, regardless of whether it’s ‘good’ or ‘bad’ can lead to weight gain and clogged arteries.
‘If you’re overeating any fat, that is not good,’ she warned.
She said plans like the ketogenic diet, which is beloved by celebrities like Kim Kardashian and Megan Fox, only works because people are eliminating other foods while on this high-fat diet.
‘If all you’re eating is fat and you’re omitting other food, of course you’re going to lose weight,’ said Rissetto, adding that when people start incorporating other foods int heir diet they tend to gain the weight back quickly.
According to Dr Josh Axe, a clinical nutritionist, a typical ketogenic diets consists of dietary fat being 70 to 80 percent total calories, with protein making up 10 to 20 percent and carbohydrate taking up a mere five to 10 percent.
Meanwhile, US dietary guidelines recommend that people keep their total fat intake between 20 to 35 percent of total calories.
People should be eating just 15 nuts per serving, according to New Jersey-based nutritionist Rissetto
Because ‘good’ fats are labeled healthy, many people think that makes it OK for them to consume as many of it as they want.
‘If I’m eating three avocados a day then I’m turning that healthy fat into an unhealthy fat,’ said Rissetto, adding that people should only be eating a quarter to a half an avocado per serving.
To reap the benefits of ‘good’ fats, people should be mindful of their proportions.
The ultimate ‘good’ fat guide: How much you can eat per serving
This is fine: a quarter to a half avocado
This is too much: a whole avocado
This is fine: 15 whole pieces (a handful)
This is too much: four handfuls
This is fine: two tablespoons
This is too much: half a jar
This is fine: one tablespoon
This is too much: nine tablespoons