Obesity and its relationship with Addiction

Similarities Between Obesity and Addiction

While similarities are highly present between obesity and addiction, it’s easy to see their clear differences, where one develops through unhealthy dietary choices and the other through unhealthy coping strategies or habits.

Yet, through those differences, commonly surface-level characteristics, it’s also easy to see the correlation between both, where obesity and its relationship with addiction are, in fact, complex.

Their similarities make their relationship multifaceted. Currently, little attention is paid to their mutual influence, but their effects on the body and brain are identical. Here are the closest similarities,, which definitely categorise both as compulsive, uncontrollable behaviours led by psychological associations.

Brain Association

Once fatty foods or takeaways are consumed, the brain produces artificial forms of dopamine and serotonin, causing positive, happy feelings. In fact, food can mirror the effects of consuming drugs, which again causes extra levels of happy chemicals.

The problem is that both stimuli rapidly associate with the brain, as once withdrawal kicks in, cravings for those exact feelings will arise. This showcases the clear link between obesity and its relationship with addiction, making obesity, in fact, a type of habit.

Feeding into the Reward System

Similar to the above point, both also feed into the reward system, targeting the same area of the brain. Rewarding oneself is very common for humans by giving in to cravings.

Without continuing the consumption of junk foods or drugs/alcohol, an imbalance will be present in the reward system, which ultimately motivates even greater desires for consumption.

Stigmatisation 

Both obesity and addiction are highly stigmatised in today’s society, making it difficult for many to speak out and rehabilitate. Onlookers commonly believe that both conditions are fuelled by greed, low willpower, and the negligent choice to consume either stimulus.

It is important to remember that intentions, while experiencing obesity and addiction, will usually go out the window, as they are highly controlled and influenced by one of the most critical and high-functioning organs.

This similarity is highly concerning, as more and more people are suffering through the stigmatisation of obesity and addiction rather than seeing the medical and restraining impacts both have.

Triggers

An interesting point in the correlation between obesity and its relationship with addiction is that both can experience similar triggers, influencing initial use.

Stress, mental health issues, loneliness, personal worries, health concerns, and pre-existing biology and genetics are all linked to overeating and substance abuse, showcasing how either condition can materialise from a trigger.

Here’s where the complex relationship of obesity and addiction comes into play, as for each individual, fleeing towards either coping strategy is likely. Yet, through doing so, an unhealthy, negative habit will be in play.

Significant Health Risks

Excessive consumption of trigger foods or drugs/alcohol is highly damaging to the body and mind. Both conditions, in fact, cause significant health risks, some of which are very similar. For example, mental health issues are common throughout both obesity and addiction diagnoses, down to the changes experienced by the user.

Down to the ongoing cycle of highs and lows, controlled by the reward system, a roller-coaster of emotions ties obesity and its relationship with addiction together, showing how a severe decline can result in binge drinking or eating.

Challenging Withdrawal Processes

A further similarity is that withdrawing from trigger foods is a similar process to withdrawing from drugs or alcohol. Significant withdrawal symptoms are expected as the body and brain adapt to reduced levels of dopamine.

Obesity And its Relationship with Addiction

Considering the above, there are many similarities between the two independent diagnoses. However, while a strong relationship between obesity and addiction is expected, there is, in fact, little evidence on whether each can impact the other.

At face value, it’s understandable to see how both can entwine, whereas low self-esteem or weight gain can result in the escapism of substance abuse. The effect can also be the case when considering an addiction, where food may be a comforter through the cycle.

Ultimately, the correlation between obesity and its relationship with addiction will depend on the individual person, their pre-existing weaknesses towards compulsive behaviours, and the stimuli which carry addictive tendencies.

Logically, food addiction will severely impact someone who is obese, placing a greater risk of dual diagnosis. Yet, who’s to say that connectivity will be present for someone who is misusing drugs rather than food?

Overcoming Addiction

Treatment is available at our Scottish rehab facility, where there is the possibility to unravel the complex correlation between both conditions while also learning to withdraw and manage the symptoms of both obesity and addiction.

For singular diagnoses, tailor-made treatment programmes will be offered, which we also provide at Nova Recovery, focusing on withdrawal, restoration, the formation of new coping strategies, and realigning the brain.

Naturally, significant lifestyle changes will be necessary to avoid ongoing exposure to trigger foods or drugs, defining similarities once again between obesity and addiction. Yet, personal recommendations will be made down to the unique makeup of each association.

Need Support? Reach Out Today

We are here for you, no matter the situation, in place to help you cope, reward yourself and exist differently without the influence of food or addictive substances.

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John Gillen - Author - Last updated: May 13, 2026

John has travelled extensively around the world, culminating in 19 years’ experience looking at different models. He is the European pioneer of NAD+ (Nicotinamide Adenine Dinucleotide) treatment to Europe in 2010; and recently back from the USA bringing state of the art Virtual Reality Relapse Prevention and stress reduction therapy. His passion extends to other metabolic disturbances and neurodegenerative diseases. The journey continues. In recent times, John has travelled to Russia to study and research into a new therapy photobiomudulation or systemic laser therapy working with NAD+ scientists and the very best of the medical professionals in the UK and the USA, together with Nadcell, Bionad Hospitals own select Doctors, nurses, dieticians and therapists. Johns’ passion continues to endeavour to bring to the UK and Europe new developments with NAD+ Therapy in preventive and restorative medicine and Wellness. In 2017 John Gillen was made a visiting Professor at the John Naisbitt university in Belgrade Serbia.