Nicotine and alcohol are two of the most addictive and widely available substances in the world — and two of the most commonly misunderstood. They are legal, socially normalised, and aggressively marketed. And for millions of people, they represent a genuine medical problem that cannot be resolved through willpower alone.
This article is for anyone who has ever tried to quit — and found it harder than expected. It is not here to shame you. It is here to help you understand what you are actually up against.
What Is Addiction, Really?
Addiction is not a moral failing. It is not weakness, lack of self-control, or poor character. It is a chronic brain disorder — one that involves changes in the structure and function of the brain, particularly the circuits governing reward, motivation, memory, and impulse control.
When you use an addictive substance repeatedly, the brain adapts. The dopamine system — which drives pleasure, motivation, and learning — is hijacked. The substance becomes associated with powerful reward signals. Over time, the brain begins to prioritise obtaining and using the substance above other activities — including those that previously brought pleasure and meaning.
This is why people who are addicted to nicotine or alcohol often continue using despite genuinely wanting to stop, despite knowing the harm it is causing, and despite repeated attempts at abstinence. The brain has been changed by the substance — and changing it back requires more than willpower.
Nicotine Addiction: The Most Underestimated Dependency
Nicotine is one of the most addictive substances known to science — more addictive, by some measures, than heroin or cocaine. Yet because smoking and vaping are legal and socially common, nicotine dependence is routinely underestimated — both by the public and, sometimes, by the medical profession.
The mechanism of nicotine addiction is well understood: nicotine binds to acetylcholine receptors in the brain, triggering dopamine release and creating powerful associations between the act of smoking and feelings of pleasure, alertness, and stress relief. Over time, the brain adapts to the presence of nicotine — and its absence (during withdrawal) produces intense cravings and discomfort.
Symptoms of Nicotine Withdrawal
Withdrawal from nicotine typically begins within hours of the last cigarette and may include:
- Intense cravings
- Irritability, frustration, or anger
- Anxiety and restlessness
- Difficulty concentrating
- Depressed mood
- Increased appetite and weight gain
- Sleep disturbances
These symptoms peak within the first few days and typically subside significantly within two to four weeks — though cravings can recur for months, particularly in response to triggers.
Effective treatments for nicotine addiction include:
- Nicotine Replacement Therapy (NRT): Patches, gums, lozenges, and inhalers deliver controlled doses of nicotine without the harmful combustion products of tobacco — reducing cravings while the behavioural component of the habit is addressed.
- Varenicline (Champix): A prescription medication that partially activates nicotine receptors, significantly reducing cravings and the pleasure associated with smoking. Among the most effective pharmacological treatments available.
- Bupropion: An antidepressant with proven efficacy for smoking cessation.
- Behavioural support: Identifying triggers, building coping strategies, and addressing the psychological role of smoking in the person's life.
Alcohol Dependence: When Drinking Becomes a Medical Problem
Alcohol dependence is characterised by a compulsion to drink, difficulty controlling intake, continued drinking despite harmful consequences, and physical withdrawal symptoms when alcohol is reduced or stopped.
It exists on a spectrum. Not everyone who drinks problematically is physically dependent — but all problematic drinking warrants attention and support.
Signs of alcohol dependence include:
- Needing to drink more to achieve the same effect (tolerance)
- Experiencing withdrawal symptoms — tremor, sweating, anxiety, nausea, insomnia — when not drinking
- Drinking to relieve or avoid withdrawal symptoms
- Difficulty controlling the amount consumed or duration of drinking episodes
- Continuing to drink despite significant harm to health, relationships, or work
- Spending a significant amount of time obtaining, using, or recovering from alcohol
- Giving up important activities in favour of drinking
"Alcohol withdrawal, in those who are physically dependent, can be life-threatening. It must never be attempted without medical supervision."
The Medical Management of Alcohol Withdrawal
Unlike most other substances, alcohol withdrawal can be genuinely dangerous — producing seizures and a condition called delirium tremens (DTs) in those who are heavily dependent. This is not said to frighten, but to emphasise that medical supervision is essential.
Medically supervised detoxification typically involves a reducing course of benzodiazepines (such as diazepam or chlordiazepoxide), which prevent seizures and reduce the severity of withdrawal symptoms. Vitamin supplementation — particularly thiamine — is also essential, as chronic alcohol use depletes B vitamins critical for brain function.
Following detox, the real work begins: addressing the psychological, social, and behavioural dimensions of the addiction.
Effective treatments for alcohol dependence include:
- Motivational Interviewing: A collaborative, non-confrontational approach to building motivation for change
- CBT for addiction: Identifying triggers, challenging unhelpful beliefs about drinking, and building coping skills
- Medications for relapse prevention: Naltrexone, acamprosate, and disulfiram have all shown efficacy in reducing relapse rates
- Peer support: Groups such as Alcoholics Anonymous provide community, accountability, and lived experience — and are a valuable complement to professional treatment
Recovery Is Possible
Addiction is chronic, but it is manageable — and recovery is entirely possible. Many people who once felt completely unable to imagine life without alcohol or cigarettes now live full, meaningful, substance-free lives.
The journey is rarely linear. Relapse is common and does not mean failure — it is a normal part of the recovery process that provides important information about what support or strategies need to be strengthened.
If you — or someone you care about — is struggling with nicotine or alcohol, please reach out. The conversation is confidential. The support is non-judgmental. And the earlier help is sought, the better the outcomes.