With age comes the changes in weight. But according to experts it is not just weight that changes over time as people should also reconsider the pounds they want to achieve by looking at their current age and height. 

A previous Gallup poll showed that 60 percent of Americans believed their weight was just about right. But the figure appeared as the same percentage of people who were overweight or obese.

This led many to wonder if their “happy weight” or ideal weight is really healthy for them when height and age are considered.

Some people may not notice that they are already getting the extra pounds as they become older. This excess weight could increase the risk of developing diseases, such as diabetes, high blood pressure, dementia and even cancer.

In women, a single increase in skirt size between mid-20s and mid-50s could make them three times more likely to have breast cancer after menopause, according to WebMD.

"These are diseases you have to manage not just for a few months, but for a lifetime,” dietitian Rachel Brandeis told the publication. “They impact your health, your wallet and your day-to-day activities.”

To get the best weight for you, here are simple ways to understand your body and what it needs: 

Check your BMI and waist size… properly

The body mass index (BMI) uses height and weight to measure body fat. However, for older adults, BMI in some cases can understate body fat. This then leads us to properly checking waist size. It can give a clear picture of overall health. 

Get a tape measure, put it around the waist, right above belly button and look at the numbers. If the waist size appears more than 35 inches for a woman or 40 inches for a man, a person can be considered obese, according to Rush University Medical Center.  

Seek small weight loss

Reconsider that ideal weight. Brandeis said older people should aim small amounts of weight loss for better health. 

Cutting weight by about 7 percent to 10 percent could improve metabolism and promote better well-being over time. 

Monitor your muscles and body fat

As people get older the muscle also shrinks. But even those who are already in their 80s can still develop lean muscle mass and keep body fat down through exercise and healthy diet. 

The National Health Service provided two height and weight charts that you can check anytime to get the right weight for your height and age.