Jumping onto the weight loss and fitness bandwagon is a trend now that it is almost strange if one is not concerned about body image or weight. There is even a subtle negative connotation underlying the contentment of one’s body image, such as being lazy or not health conscious enough. However, the constant pursuit of the “perfect” body/ weight comes at a high cost and especially risky for those with an eating problem. Losing weight is appropriate if one is medically overweight and follows modest weight loss goals and flexible guidelines for eating. It is advisable to lose 0.5 to 1 kilogram a week. Many trendy diets with restrictive dietary rules can be detrimental to your physical and your mental health. By sustaining a markedly under-eating diet or a low body weight, one can suffer from dangerous psychological, social, and physical effects.
Psychological
Firstly, under-eating can affect our thinking, feelings, and behaviours. Our brain consumes roughly 300 calories daily to function properly and with a restrictive diet, you may notice a decline in your concentration, reaction time, and decision making ability. Having a restrictive diet also increases the thoughts of food, which interfere with the ability to focus on other things, and further exacerbates the symptoms of low mood and irritability. Another common feeling experienced is “feeling fat” despite of a low body weight. In hope to cope, behavioural changes, such as heightened obsessiveness with food, a rigid routine or a ritualized eating habit are developed overtime. As time passes, people are susceptible to think that this is their new identity whereas their true personality is being masked by the effects of under-eating or being underweight.
Social
The above-mentioned psychological effects also have profound impact on social functioning. The heightened concern about body image and weight also exaggerated the need for routine and predictability. As a result, many have difficulty being spontaneous, fear to eat in public, and tend to withdraw from social event and interaction to maintain their inflexible lifestyle. The loss of sexual desire due to hormonal change and low mood also reinforces their socially withdrawn behaviours. Prolonged social withdrawal could aggravate low mood by limiting social support and pleasurable activities, which further reinforces the vicious cycle.
Physical
Lastly, under-eating and being underweight have a marked impact on one’s physical health with cooccurring medical complications such as electrolyte abnormalities, respiratory failure, and cardiovascular and kidney problems (Mehler & Brown, 2015). The physical effects significantly elevated mortality rate among individuals with an eating disorder.
By losing fat and muscles from a restrictive diet, many experience weakness when walking up stairs or trying to stand up from a sitting/squatting position. The body’s natural temperature regulation is altered, resulting in a lower body temperature and feeling profoundly cold. The heart and circulation is also affected by deterioration of the heart muscle. Many experience a drop in heart rate and blood pressure. There is a heightened risk of heart beat irregularities (arrhythmias) and sudden death amongst these individuals.
Another harmful effect is the deterioration of one’s bone strength. This amplifies the risk of osteoporosis and bone fractures, even from minor accident. Likewise, under-eating and being underweight have profound effect on one’s hormonal functions and fertility. Some individuals experience loss of interest in sex, a decline in sexual responsiveness, and amenorrhea (absence of menstruation). There may also be hair loss and dry skin (e.g. skin pilling on palms and lips), which can develop an orange tinge. In some cases, a downy hair called lanugo may start to grow on body especially face, abdomen, back, and arms. Some of the effects above are direct effects of sustained under-eating despite a healthy body weight. The exact physical effects, though, vary depending upon the extend and nature of one’s dietary deprivation.
Conclusion
It is certainly concerning and frustrating when you see someone engaging in a restrictive diet while damaging their body. We are often tempted to confront and say “why can’t you just eat?!”. However, it is always a tough fight with a demon when one has an eating problem. The fear of weight gain and food intake that consumes them often surpass the dangerous effects that dieting does to their physical and mental health. This is also the reason why ED is difficult to treat and require collective professional help from doctors, psychologist, dietician and etc. Many people often do expect all the detrimental effects when they embarked on a restrictive weight loss journey and when all these effects emerge, they are already too deep into this self-maintaining vicious cycle. Having said that, it is never too late to visit an ED professional to understand more about your condition and discover if you suffer from an eating disorder. While the effects of having too low a body weight are dangerous and can cause long-term damage to your body, most of these effects would go away if you regain to a low but healthy body weight, with or without professional help.
This article was published on ‘Singapore Psychologist’, a quarterly flagship magazine by the Singapore Psychological Society. For the full magazine, visit https://singaporepsychologicalsociety.org/singapore-psychologist/ .


