Preparing for Summer: 5 Principles for Healthy Weight Loss

Five Principles for Healthy Weight Loss

As summer approaches, the desire to lose a large amount of weight quickly can increase. Very restrictive diets, however, can make it difficult to meet nutritional needs and are often difficult to sustain.

Healthy weight management is not simply about lowering the number on the scale. The goal is to develop eating, activity, sleep and behavioural habits that can be maintained over time.

Energy and nutrient requirements vary according to age, sex, height, weight, physical activity, health conditions, medication use and personal preferences. There is no single diet that is appropriate for everyone.

What Is a Healthy Rate of Weight Loss?

Weight-loss rates vary between individuals. For adults for whom weight loss is appropriate, the CDC notes that gradual weight loss of approximately 0.5–1 kg per week is more likely to be maintained than faster weight loss.

Even modest weight loss of around 5% of initial body weight can improve blood pressure, blood glucose and blood lipids in some people.

Not everyone needs to lose weight. Appropriate goals should consider BMI, waist circumference, existing health conditions and overall health.

Principle 1: Find a Sustainable Meal Pattern

Meal timing should fit the individual's daily routine, hunger and fullness cues, working hours, physical activity and medical needs.

There is no universal requirement to eat three main meals plus snacks.

Some people prefer three meals, while others do well with a different pattern. The aim is to avoid excessive hunger, meet nutritional needs and develop a pattern that can be maintained long term.

Frequent high-calorie late-night eating can increase overall energy intake. The most appropriate eating schedule is one that supports health and can be maintained consistently.

Principle 2: Eat an Adequate and Balanced Diet

According to WHO, the core principles of a healthy diet are adequacy, balance, moderation and diversity.

A healthy eating pattern can include:

• Vegetables and fruits
• Whole grains
• Legumes
• Fish, eggs, dairy or other appropriate protein sources
• Nuts and seeds
• Unsaturated fats such as olive oil

WHO recommends that people over 10 years of age aim for at least 400 g of fruit and vegetables and at least 25 g of naturally occurring dietary fibre each day.

Free sugars, excessive salt, saturated fats and highly processed foods should be limited.

It is generally unnecessary to completely eliminate carbohydrates, fats or another major food group simply to lose weight.

Principle 3: Practise Mindful Eating

Mindful eating involves paying attention to hunger, fullness, taste, smell, eating speed and emotions that can influence eating behaviour.

Helpful practices may include:

• Eating with fewer screen-related distractions
• Eating more slowly
• Recognising hunger and fullness
• Identifying eating triggered by stress, boredom or habit
• Focusing on the overall eating pattern rather than labelling individual foods as strictly “good” or “bad”

Mindful eating can support healthier eating behaviour in some people, but it does not guarantee a particular amount of weight loss on its own.

Principle 4: Stay Adequately Hydrated

Water is essential for temperature regulation, circulation, digestion, kidney function and many other physiological processes.

However, drinking more and more water does not automatically result in greater weight loss.

Fluid requirements vary according to body size, climate, activity, pregnancy, breastfeeding, illness and medication use.

As a general guide, the NHS recommends that most people drink enough fluid to keep urine a clear pale-yellow colour; approximately 6–8 glasses of fluid per day can be used as a general reference, with higher needs in hot weather or during physical activity.

Choosing water instead of sugar-sweetened drinks can help reduce energy and free-sugar intake.

Principle 5: Be Physically Active

Physical activity supports cardiovascular health, muscle and bone strength, sleep, mental health and long-term weight management.

WHO recommends that adults complete:

• 150–300 minutes of moderate-intensity aerobic activity per week, or
• 75–150 minutes of vigorous-intensity aerobic activity, or an equivalent combination, and
• Muscle-strengthening activity on at least 2 days per week.

Physical activity does not have to mean competitive sport. Brisk walking, cycling, taking the stairs and increasing active transportation all contribute.

Although most weight loss generally comes from reducing energy intake, physical activity has important health benefits and contributes to maintaining weight loss.

Does Sleep Affect Weight Management?

Insufficient or irregular sleep can affect appetite, food choices, energy levels and weight management.

A general target for adults is at least 7 hours of quality sleep per night, although individual needs vary.

Melatonin secretion is related to darkness and the individual's circadian rhythm. It is therefore inaccurate to define a fixed 11 p.m.–5 a.m. melatonin window for everyone.

Keeping consistent sleep and wake times, reducing bright light and screen exposure at night and maintaining a suitable sleep environment can support healthy sleep.

When Is Professional Support Helpful?

Weight management is not always simply a matter of eating less and moving more.

Professional assessment can be useful for people with obesity or obesity-related conditions, diabetes, endocrine disorders, repeated weight cycling, restrictive eating patterns, medications that influence weight, or special circumstances such as pregnancy, breastfeeding and older age.

Frequently Asked Questions

References

1. Academic Hospital. Preparing for Summer with Five Golden Rules
2. World Health Organization. Healthy Diet
3. Centers for Disease Control and Prevention. Steps for Losing Weight
4. World Health Organization. Physical Activity
5. NHS. Water, Drinks and Hydration
6. CDC National Center for Health Statistics. Short Sleep Duration and Sleep Difficulties Among Adults