Your REAL ideal weight

Siski Green / 23 January 2017

There's BMI, there's the figure on the scales, and then there's the weight at which you feel 'just right' – but which is your ideal weight for health?



Most people have an ‘ideal’ weight in mind, a magic number that they are always aiming for or trying to stick to. But if you’re struggling to get to that figure it could be that it’s not quite the right one – there are many different ways to calculate an ‘ideal’ weight, which in itself shows that really such a thing doesn’t really exist.

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Making things more complicated, as you go through different life stages – puberty, adulthood, pregnancy, menopause and so on – your natural body shape changes so what you once considered your ‘ideal’ weight and shape may be more difficult or even impossible to achieve. 

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So, when you try to calculate your real ideal weight, take the following points into consideration.  

First, what does weight consist of?

  • The blood in your body weighs about 7% of your total weight;
  • your bones 15%;
  • your muscles between 25 and 50% of your body weight;
  • the percentage that’s fat can be anything from 6% (for athletic men) to 31% for women (average) and 24% for men (also average).

When your body fat percentage reaches more than 32% for women and 25% for men, you’re considered obese. But given that muscles are such a large proportion of your possible weight, it’s clear that the figure on the scales isn’t necessarily the best figure to rely on, especially if you do strength or resistance training regularly. 

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Second, a healthy weight means that you’ve got a healthy balance of fat to muscle to bone, so for each person that might be slightly different. For example, depending on your genetic make-up your ‘healthy weight’ may vary from the recommended healthy weight guidelines from the government.

If, for example, you’ve got a small frame with a lot of excess weight, you might be deemed as being within a healthy weight range purely because your small frame balances out the figure.

Similarly, if you’re heavy boned, that could also affect the figure on the scales in a way that makes it seem as though you have more excess weight than you do.

Added to that, it seems there are differences in how our genetic make-up affects our weight. Research published in the International Journal of Obesity found that the relationship between body fat and body mass index (BMI) in some ethnic groups was different to others, indicating that methods of checking for ‘ideal weight’ might need adjusting depending on your genetic make-up. 

Relied-upon methods such as BMI, for example (where guidelines suggest you want to aim for between 18.5 and 24.9), can be misleading, too. Your BMI might be within the normal range, for example, even if your waist size is larger than average for your height and build (on average, 35 inches for women, and 40 inches for men). And yet, research has shown that having a larger waist size is indicative of weight-related health risks such as heart disease and diabetes.

What’s more, if you’re ‘big’ because of muscle, your BMI will read as being higher even if you have low body fat. So while BMI can give you a rough idea of how healthy your weight is, it certainly doesn’t provide a definitive answer. 

Are body fat scales reliable?

You might try using body-fat scales, which have become popular recently. But scales that measure body-fat percentage aren’t always accurate either because they focus the measurement on your legs – if you have thin legs and carry most of your weight around your midriff, for example, the scales will show you as having less body fat than you may actually have.

What’s more, the results can be affected by how much liquid you’ve ingested (having a knock-on effect on how hydrated you are), as well as if you’ve recently exercised. 

To make matters even more complicated, there’s no accepted ‘standard’ or average for ideal body fat for a certain height or size person. Your body fat varies depending on your sex, age, fitness levels and even your ethnicity.

Importantly, where your excess body fat is also something to consider. If you have an even distribution of fat compared to someone who is thin but has a fatter midriff, then it’s likely you’re healthier than they are as fat in the abdominal area raises risk of heart disease as well as other health issues. 

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Complicated, right? And to make matters more complex your weight also relates to your emotional state. Your idea of what you should weigh is based on your memory of when you felt at your ‘best’, or possibly when others said you looked your best, or even a number you’ve picked based on something you read or heard somewhere.

Struggling to get to that magic number could be impossible and so will only make you miserable – and get this, your scales might not even be giving you the correct figure. When researchers from Consumer Reports checked the accuracy of various scales, they found that results could vary widely, with some scales stating weight as over or under by as much as ten pounds.

How can you reach your ideal weight?

So, what can you do? To find your true ideal weight, assess yourself in several ways – use BMI, waist circumference, taking into account your build and naturally propensity towards a certain type of figure, have your body fat checked, and use your own clothing as a guide to when you’ve put on too much weight – but don’t focus reaching a specific figure, instead focus on the process.

Focus on living healthily – eating fresh healthy food, exercising regularly, reducing stress, limiting alcohol and so on – so that managing your weight becomes a day-to-day effort, rather than a far-off goal. Stick to this and your ideal weight will come to you… just like magic. 

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The opinions expressed are those of the author and are not held by Saga unless specifically stated.

The material is for general information only and does not constitute investment, tax, legal, medical or other form of advice. You should not rely on this information to make (or refrain from making) any decisions. Always obtain independent, professional advice for your own particular situation.