Science and Public Health

5 Major Weight Loss Concerns Scientists Can Only Shed Light.

Some central issues scientists examine and illuminate are the effectiveness of weight programs, weight cycling, safety, stigma, and negative body image.

Science can only shed light. The rest is our responsibility.

I have been investigating critical issues surrounding healthy weight management for a long time for myself, my loved ones, and my readers. In this article, I discuss the key issues, summarize my research by linking to credible sources for details, and provide practical takeaways.

Although scientists have shown great interest in healthy weight management for a long time, the science behind weight loss is still murky. However, some scientists shed light on critical issues, informing us, giving us useful ideas, or validating our assumptions to some extent.

But we have a long way to go. We should keep our expectations reasonable, as science cannot provide conclusive statements for weight management yet. Weight factors have too many variables, the human body is complex, and many unknowns are yet to be explored.

Some people look for hardcore scientific results to make their decisions, but not having published outcomes does not necessarily mean a protocol or outcome does not work. Or published studies are not necessarily accurate.

Scientists can only shed light on our concerns. They cannot guarantee the efficacy of a theory or mechanism for everyone. Our bodies and minds are unique. We have yet to create one-size-fits-all solutions in science.

However, leveraging scientific theories, mechanisms, and principles allows us to make our decisions experimentally, as sensible experiments with professional support can give us confidence.

1 — Effectiveness of Weight Loss Programs

All weight loss programs intrinsically claim to be effective. Their primary goal is understandably to promote and sell their products. However, it can be difficult to determine which ones work.

The effectiveness of weight loss programs can impact clients’ self-esteem, confidence, and health. Effective programs can lead to sustained weight loss, improved health outcomes, and improved quality of life.

Ineffective programs can lead to frustration, disappointment, and potentially harmful behaviors, such as extreme dieting or disordered eating.

I personally do not follow any program. Instead, I use healthy weight management protocols extracted from holistic health principles. However, this might not be possible for everyone. Therefore, following a program can work for many people.

Qualified healthcare professionals diligently prepare some programs as those companies care about the health of their clients.

But some companies do not, as their goal is to make money from products with no focus on the long-term wellness of clients. After selling their products, those companies may disappear and leave clients vulnerable.

Guidance from Scientists

This systematic review, published in the Annals of Internal Medicine, evaluated major commercial weight loss programs in the United States. The paper concluded that:

“Except for one trial of Weight Watchers, the evidence to support the use of the major commercial and self-help weight loss programs is suboptimal. Controlled trials are needed to assess the efficacy and cost-effectiveness of these interventions.”

There has been a debate on the effects of macronutrients on weight loss. From my experience, lowering carbs and increasing healthy weight with moderate protein intake looks like a good option in the long term.

However, this clinical study indicates, "Reduced-calorie diets result in clinically meaningful weight loss regardless of which macronutrients they emphasize.”

I agree that caloric intake plays a critical role in weight management. Lowering calories will lead to weight loss in the short term. However, managing healthy fat loss and muscle retention can be very difficult unless addressing insulin, leptin, and cortisol effects.

A diet program including exercise appears to be better. For example, a meta-analysis states, “Evidence suggested that combined exercise and diet interventions were better than diet-only interventions for long-term weight loss in adults. Both interventions were associated with partial weight regain.”

This study compared two potent weight loss therapies, a low-carbohydrate, ketogenic diet, and orlistat therapy combined with a low-fat diet.

Researchers concluded that a low-carbohydrate, ketogenic diet led to similar improvements as orlistat therapy combined with a low-fat diet for weight, serum lipid, and glycemic parameters and was more effective for lowering blood pressure.

Having similar results, I wrote this article titled “Keto Diets and Intermittent Fasting Lifestyle Tick the Boxes of Health Goals.” based on experience.

2 — Long-Term Effects of Weight Cycling

Weight cycling refers to repeated weight loss and gaining it again. The protocol is called the yo-yo diet. It resembles the up-down motion of a yo-yo. They can have negative health consequences.

Due to the health impact and implications of yo-yo diets, focusing on health and wellness rather than rapid weight loss can reduce the negative impacts of weight stigma and prejudice.

Therefore, focusing on sustainable lifestyle changes, rather than quick-fix diets or programs, might be more effective in preventing weight cycling and promoting overall health.

Due to the limitations of studies, scientists cannot agree on the long-term effects of weight cycling as they are commonly used in fitness communities and the military. I provide over a decade of perspectives from the literature in the next section.

Guidance from Scientists

According to a 2009 study, “Research indicates that weight cycling, or “yo-yo dieting” is common in overweight and obese populations. The long-term negative health consequences of weight cycling are debated, and it is unclear whether or not this weight change pattern poses a greater disease risk than obesity maintenance.”

A 2012 population-based study titled “Weight Cycling and Mortality” was published in the International Journal of Obesity.

Researchers defined a weight cycle as an intentional loss of 10 or more pounds followed by regain of that weight. The lifetime number of weight cycles was reported on a questionnaire administered at enrollment in 1992.

The study examined 55,983 men and 66,655 women in the Cancer Prevention Study II Nutrition Cohort from 1992 to 2008. 15,138 men and 10,087 women died during follow-up, which ended in 2008.

When the models were adjusted for age only, weight cycling was positively associated with mortality. However, after adjustment for body mass index and other risk factors, low numbers of weight cycles were associated with slightly lower mortality rates.

So their results couldn’t support an increased risk of mortality associated with weight cycling. Therefore this issue remains contentious.

The study is useful with a large population. However, population studies are limited as too many factors beyond researchers' control might affect the results. Therefore, they cannot be used as conclusive principles.

After nine years, a 2020 paper informs, "There is much debate as to whether weight cycling, routinely undertaken by athletes across various sporting disciplines, is detrimental to future obesity and consequently cardiometabolic risk.”

The paper asserts that “Despite evidence indicating such a link within the general population, it has been suggested that the background of high physical activity levels in athletes, onto which weight cycling is superimposed, will provide relative protection of FFM during weight loss and consequently against collateral fattening during weight recovery.”

3 — Safety Concerns for Rapid Weight Loss

In addition to weight loss programs discussed in item #1, some supplements and products for rapid weight loss might be unsafe or ineffective. The supplement industry has little or no regulation in many countries.

Some supplements may contain harmful substances leading to health issues. In addition, rapid weight loss can be dangerous and even cause death for people with underlying health conditions.

For example, on February 9, 2004, the Food and Drug Administration (FDA) issued a final rule prohibiting the sale of dietary supplements containing ephedrine alkaloids (ephedra) because such supplements present an unreasonable risk of illness or injury.

More importantly, rapid weight loss can be dangerous, particularly for people with certain medical conditions such as diabetes or heart disease.

Guidance from Scientists

Rapid Weight Loss is a rapid reduction in weight over a short period of time seeking to attain the norm required for a competition in a particular weight category.

To this end, this 2022 study titled “Rapid weight loss and the body fluid balance and renal function of wrestlers” investigated the Lithuanian athletes of elite combat sports needing rapid weight loss to qualify for the competition. The researchers concluded that:

“Rapid Weight Loss magnitude potentially plays an important role in maintaining the loss of muscle mass during the preparatory training phase. Therefore, an adequate regulatory program should be integrated into the training plans for high-performance combat sports athletes to keep the athletes and their coaches responsible for proper weight control.”

This 2020 meta-analysis compared gradual and rapid weight loss effects on body composition and resting metabolic rate.

They found that gradual weight significantly preserved resting metabolic rate compared with rapid weight loss. However, they couldn’t find enough evidence for fat-free mass. Despite all, the study highlighted the benefits of gradual weight loss.

4 — Weight Stigma, Discrimination, and Bias

As confirmed by some studies, weight-related stigma and discrimination can have negative health outcomes, such as increased stress, anxiety, depression, and even inflammation and high blood pressure.

Discriminatory weight bias can cause strong emotions like shame, guilt, self-blame, anger, grief, regret, and envy, leading to social isolation and negative health outcomes.

Stigma and discrimination related to weight issues include assumptions that overweight people are lazy or lack willpower and discrimination in the workplace and healthcare system.

Addressing weight bias and promoting acceptance of diverse body types can reduce the negative impact of weight stigma.

Guidance from Scientists

This population study paper titled “Obesity, perceived weight discrimination, and hair cortisol” on Psychoneuroendocrinology informs that the “stigmatization of individuals with obesity is pervasive and may act as a psychological stressor.”

The paper concludes, “Perceived weight discrimination is an important mediator of the association between obesity and cortisol. Interventions combating weight stigma and discrimination or promoting strategies for coping with stress could help to lessen the psychological and physiological burden of obesity.”

This paper titled The Effects of Stigma on Obesity Treatment in the American Journal of Public Health informs that “Stigma and discrimination toward obese persons are pervasive and pose numerous consequences for their psychological and physical health.

Despite decades of science documenting weight stigma, its public health implications are widely ignored. Instead, obese persons are blamed for their weight, with common perceptions that weight stigmatization is justifiable and may motivate individuals to adopt healthier behaviors.”

Researchers examined evidence to address these assumptions and discuss their public health implications. Their findings suggest that weight stigma is not a beneficial public health tool for reducing obesity.

The paper concludes that stigmatizing obese people threatens their health, generates health disparities, and interferes with effective obesity intervention efforts. These findings highlight weight stigma as both a social justice issue and a priority for public health.

5 — Cognitive Distortions and Negative Body Image

I wrote several articles about the health implications of negative body image. In one of my recent stories, I discussed its negative effect on mental health, leading to suicidal thoughts and attempts.

Negative body image means subjective perception, dissatisfaction, shame, and anxiety about a person’s body. It’s a psychological concept including negative beliefs, cognitive distortions, and attitudes toward their physical appearance.

People with negative body image may feel that their bodies don’t meet societal or personal standards and may experience distress and self-consciousness about their appearance.

Various factors, like cultural and societal pressures, traumatic experiences, mental health conditions such as anxiety and depression, and genetics, can cause negative body image.

Negative body image can adversely impact self-esteem, mental health, and overall quality of life. Addressing negative body image requires working with mental health professionals to explore the underlying causes and develop coping strategies to improve body acceptance and self-esteem.

The body positivity movement is still a controversial issue. It promotes acceptance of diverse body types and challenges traditional beauty standards. Some advocates argue that this movement can reduce stigma and improve self-esteem.

However, opponents of this movement are concerned that it may normalize unhealthy behaviors or discourage people from seeking help to lose weight.

For example, some people may interpret body positivity as a message that it is okay to be unhealthy rather than focusing on overall health and wellness.

Guidance from Scientists

This paper titled “The Health at Every Size Paradigm and Obesity” in the American Journal of Public Health examined missing empirical evidence that may help push the reframing obesity debate forward.

The paper informs that “a Health at Every Size approach has been proposed to address weight bias and stigma in individuals living with obesity, and more recently articulated as a promising public health approach beyond the prevailing focus on weight status as a health outcome.”

The paper advises that “advancing our understanding of Health at Every Size from a public health perspective requires us to move beyond an ideological debate and give greater attention to the need for empirical studies across various populations.”

Researchers assert, "Only then can the value of Health at Every Size, as a weight-neutral, public health approach for the prevention of obesity and other chronic diseases, be fully understood.”

Regarding positive movement, some researchers focussed on acceptance and commitment therapy for weight control.

For example, this paper in the Journal of Contextual Behavioral Science provides a model, evidence, and future directions for using acceptance and commitment therapy. The paper informs that:

“Behavioral weight loss programs achieve substantial short-term weight loss; however, attrition and poor weight loss maintenance remain significant problems. Recently, Acceptance and Commitment Therapy has been used to improve long-term outcomes.”

Researchers conclude, “The current evidence suggests that Acceptance and Commitment Therapy could be useful as an add-on treatment, or in a combined format, for improving long-term weight loss outcomes.”

However, they recommend proper larger studies with longer follow-ups to identify how best to combine standard and acceptance therapies and who would benefit most from these approaches.

Summary and Conclusions

Dependence on weight management products and services can be stressful. Finding the right product requires diligence, investigation, and support from qualified healthcare professionals.

Safety concerns in the weight loss industry can seriously affect our health and well-being. Unsafe or ineffective products can lead to adverse reactions, harm, or even death.

Stigma, discrimination, and negative body image can adversely impact our health, social connections, and economic opportunities. Any weight bias can lead to feelings of shame, self-blame, and social isolation, leading to negative health outcomes.

Weight cycling can negatively impact our physical and mental health, affecting our self-esteem and body image. Focusing on health and wellness rather than weight loss might reduce the negative impacts of weight cycling.

The body positivity movement can potentially encourage positive body image and self-esteem, positively impacting people’s mental health and well-being. However, complacency can be an issue.

Based on my reviews, observations, and experience, I can offer the following practical tips you may consider and customize for your needs and goals.

Takeaways

1 — Focus on sustainable and healthy lifestyle habits (good nutrition, restorative sleep, regular exercise, rest, fun) and overall wellness rather than losing weight with quick-fix diets or programs.

2 — Avoid extreme dieting or rapid weight loss, which can lead to weight cycling. Set realistic goals and celebrate small successes along the way.

3 — Research products and programs thoroughly before starting and consult with a healthcare provider before starting a new weight loss regimen.

4 — Avoid products or programs that promise rapid weight loss or seem “too good to be true.”

5 — Challenge negative stereotypes and assumptions about weight. Promote positive body image by supporting diverse representation in media.

6 — Avoid comparing yourself to others and celebrate your own unique qualities and strengths. Seek support from friends, family, and healthcare providers to stay motivated and on track.

7 — Practice self-compassion, self-care, and self-love, and surround yourself with supportive people who celebrate diversity and promote positive body image.

Leveraging scientific theories, mechanisms, and principles is helpful in making informed decisions. However, by conducting sensible experiments with professional support, we can gain the confidence to make impactful choices based on empirical evidence.

Thank you for reading my perspectives. I wish you a healthy and happy life.

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