Tobacco and nicotine addiction

What it is

Tobacco use disorder is dependence on nicotine, delivered by cigarettes and increasingly by other products. Nicotine is one of the most addictive substances known: it reaches the brain within seconds, and regular use produces tolerance, cravings and a withdrawal syndrome (irritability, restlessness, difficulty concentrating, low mood, strong cravings) that makes quitting genuinely difficult. This difficulty is physiological, not a sign of weak will.

Tobacco is also uniquely lethal among common addictions: used as intended, it kills a large share of long-term users through cancers, heart and lung disease. Most people who smoke say they want to quit.

How common is it

Tobacco use remains common in Kenya and across Africa, and it is one of the leading preventable causes of death worldwide. Most people who smoke began as teenagers, and most say they want to stop. Newer products, including shisha and electronic cigarettes, are reaching young people and also deliver addictive nicotine.

What causes it

Nicotine is the driver. It is highly addictive, reaching the brain within seconds, so regular use quickly produces tolerance, cravings, and withdrawal. Starting young, having family or friends who smoke, stress, and ready availability all raise the risk. Dependence is a physical process, which is why stopping is hard and why willpower alone often is not enough.

How it is diagnosed

A clinician identifies tobacco use disorder through a conversation about how much and how often a person uses tobacco, how soon after waking, cravings, and difficulty cutting down. There is no special test. What matters most is readiness to quit and matching the person with the support and medicines that will help.

How it is treated

Quitting is achievable, and help substantially improves the odds. Behavioural support (counselling, quitlines, brief advice from health workers) and medicines each help, and combined they work best. Effective medicines include nicotine replacement therapy (patches, gum, lozenges) and certain prescription medications, which ease withdrawal and roughly double or triple success rates compared with willpower alone (see our medications guide).

A realistic message matters: many people make several attempts before quitting for good, and each attempt is progress, not failure. The health benefits of stopping begin within hours and grow for years, at any age.

Tobacco use disorder in the African context

Tobacco companies increasingly target growing markets in Africa, including young people, even as Kenya has strong tobacco control laws under its Tobacco Control Act and the WHO Framework Convention on Tobacco Control. Shisha and electronic cigarettes are sometimes wrongly believed to be safe. Quitting support and nicotine replacement are not always easy to find, but health workers can advise, and stopping brings benefits at any age.

Managing it day to day

Alongside support and medicines, these steps help.

• Set a quit date, and tell people who will support you.
• Use nicotine replacement or prescribed medicine to ease cravings rather than relying on willpower alone.
• Identify the moments tied to smoking, such as after meals, with tea, or under stress, and plan a different response.
• Avoid triggers in the early weeks, and keep your hands and mouth busy.
• Treat a slip as a lesson, not a failure, and keep going.

Helping someone

If someone you love wants to quit, your encouragement helps.

• Support rather than nag, and respect that they must choose it.
• Avoid smoking around them, and help remove tobacco from shared spaces.
• Encourage proven help, such as nicotine replacement, medicines, and counselling, rather than willpower alone.
• Be patient with slips, which are normal on the way to quitting.
• Notice and celebrate progress.