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Age & Appetite


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#1 kalip

kalip

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Posted 10 July 2018 - 11:44 AM

HOW AGE AFFECTS YOUR APPETITE

 

Do you eat to live or live to eat? We have a complicated relationship with food, influenced by cost, availability and even peer pressure. But something

we all share is appetite – our desire to eat.

While hunger – our body’s way of making us desire food when it needs feeding – is a part of appetite, it is not the only factor. After all, we often eat

when we’re not hungry, or may skip a meal despite pangs of hunger. Recent research has highlighted that the abundance of food cues – smells, sounds

, advertising – in our environment is one of the main causes of overconsumption.

Our appetite is also not fixed; it changes across our lifespan as we age. As Shakespeare might have put it, there are seven ages of appetite, and a better

understanding of these phases could help us to develop new ways of tackling under-eating and overconsumption, along with the health effects, such as

obesity, that follow.

 

The first decade, 0-10

In early childhood, the body goes through rapid growth and dietary behaviour built up in early life can extend into adulthood, leading a fat child

to become a fat adult.

Fussiness or fear of particular foods can also contribute to meal time struggles for parents of young children, but a strategy of repeated tasting and

learning in a positive environment can help children learn about unfamiliar but important foods, such as vegetables.

Children should also experience some control, particularly in relation to portion size. Being forced to “clear the plate” by parents can lead youngsters

to lose their ability to follow their own appetite and hunger cues, promoting overeating in later years. There are growing calls for governments to 

protect young children from targeted junk food advertising – not just on television but in apps, social media and video blogs – since food advertising

increases food consumption, which can contribute to children becoming overweight.

 

The second decade, 10-20

In the teenage years, a growth in appetite and stature driven by hormones, signals the arrival of puberty. How a teenager approaches food during this

critical period will shape their lifestyle choices in later years.

This means the dietary decisions that adolescents make are intrinsically linked to the health of the future generations that they will later become parents to.

Unfortunately, without guidance, teenagers may adopt eating behaviours and food preferences associated with unhealthy consequences.

Young women in general are more likely to suffer from nutritional deficiencies than young men because of their reproductive biology. Teenage girls

who become pregnant are also at greater risk since their bodies are supporting their own growth in competition with that of the growing foetus.

 

The third decade, 20-30

As young adults, lifestyle changes such as going to college, getting married or living with a partner, and parenthood can promote weight gain.

Once accumulated, body fat is often difficult to lose. The body sends strong appetite signals to eat when we consume less than our energy needs, but

the signals to prevent overeating are weaker, which can lead to a circle of over-consumption. There are many physiological and psychological factors

that make eating less difficult to maintain over time.

An area of new research is to develop satiety, the sense of having eaten enough. This is helpful when trying to lose weight, since feeling hungry is one

of the main barriers to eating less than your body says you need.

Different foods send different signals to the brain. It’s easy to eat a tub of ice cream, for example, because fat doesn’t trigger signals in the brain for us

to stop eating. On the other hand, foods high in protein, water or fibre content make us feel fuller for longer. Working with the food industry provides

an opportunity to shape the future of meals and snacks in beneficial ways.

 

The fourth decade, 30-40

Adult working life brings other challenges beyond a rumbling stomach, but also the effects of stress, which has been shown to prompt changes in appetite

and eating habits in 80% of the population, equally divided between those that gorge and those that lose their appetite.

These different coping strategies are intriguing: the phenomena of “food addiction” – an irresistible urge to consume specific, often high-calorie foods –

is not well understood. Many researchers even question its existence.

Other personality traits, such as perfectionism and conscientiousness, may also play a role in mediating stress and eating behaviour.

Structuring the work environment to reduce problematic eating patterns such as snacking or vending machines is a challenge. Employers should strive

to subsidise and promote healthier eating for a productive and healthy workforce, along with ways of managing stress and stressful situations.

 

The fifth decade, 40-50

The word diet comes from the Greek word diaita meaning “way of life, mode of living”, but we are creatures of habit, often unwilling to change our

preferences even when we know it is good for us. We want to eat what we want without changing our lifestyle, and still have a healthy body and mind.

There is much evidence to show that diet is a major contributing factor to ill-health. The World Health Organisation highlights smoking, unhealthy diet,

physical inactivity and problem drinking as the main lifestyle impacts on health and mortality.

It is between the ages of 40-50 that adults should change their behaviour as their health dictates, but symptoms of illness are often invisible – for example

high blood pressure or cholesterol – and so many fail to act.

 

The sixth decade, 50-60

After the age of 50, we begin to suffer a gradual loss of muscle mass, at between 0.5-1% per year. This is called sarcopenia, and lessened physical activity,

consuming too little protein, and menopause in women will accelerate the decline in muscle mass.

A healthy, varied diet and physical activity are important to reduce the effects of ageing, and an ageing population’s need for palatable, cost-effective, 

higher-protein foods is not being met.

Protein‐rich snack foods might represent an ideal opportunity to increase total protein intake in older adults, but there are currently few products designed

to meet the requirements and preferences of older adults.

 

The seventh decade, 60-70, and beyond

A major challenge today in the face of increasing life expectancy is to maintain quality of life, or else we will become a society of very old and infirm

or disabled people.

Adequate nutrition is important, as old age brings poor appetite and lack of hunger, which leads to unintentional weight loss and greater frailty.

educed appetite can also result from illness, for example the effects of Alzheimer’s disease.

Food is a social experience, but the loss of a partner or family and eating alone affect the sense of pleasure taken from eating. Other affects of old age,

such as swallowing problems, dental issues, reduced taste and smell also interfere with the desire to eat and our rewards from doing so.

We should remember that throughout life our food is not just fuel, but a social and cultural experience to be enjoyed. We are all experts in food

– we eat it every day.

 

So we should strive to treat every opportunity to eat as an opportunity to enjoy our food and to enjoy the positive effects eating the right foods can

have on our health.

 

 

 

 

http://www.bbc.com/future

 

kalip


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