Once you start a fertility journey, every cup of coffee and every glass of wine seems to come with a question mark. The advice online ranges from "total abstinence from everything" to shrugging indifference, and it's genuinely hard to know where the line sits.
Here's a calm, non-preachy breakdown of caffeine, alcohol, smoking, and everyday habits during a fertility journey — what actually warrants change, and how to make those changes without overhauling your entire life overnight.
Caffeine: moderate, not zero
You probably don't need to give up your morning chai. Moderate caffeine is widely considered acceptable — a common reference point is around 200mg a day, roughly one to two coffees or a couple of cups of tea. The catch is the total: chai, filter coffee, colas, energy drinks, and even chocolate all add to the tally, and it climbs faster than people expect. If your clinic gives you a specific limit, follow it.
A bonus: keeping caffeine to the earlier part of the day also protects your sleep, which matters more than most people realise.
Alcohol: a clear case for cutting back
Alcohol is one of the habits where reducing — or pausing entirely — while actively trying or in treatment makes straightforward sense. A key reason: you may be in a very early pregnancy without yet knowing, and the standard advice there is to avoid alcohol. Many people simply choose to stop for the duration. This is a good topic to raise with your doctor for guidance tailored to your stage rather than relying on blanket internet rules.
Smoking: the clearest priority
If there's one change worth making first, it's this. Smoking is genuinely harmful to fertility for both partners, and the same caution extends to vaping and second-hand smoke. Quitting is hard, and willpower alone often isn't enough — that's normal, not a personal failing. Ask your doctor about structured support; it markedly improves the odds of stopping for good.
It takes two
These habits aren't only the woman's concern. Smoking, heavy drinking, and lifestyle factors affect sperm as well as eggs and cycles, so both partners' choices count. Tackling changes together — quitting smoking as a team, cutting back on alcohol jointly — is fairer and far more likely to stick. It also turns a lonely effort into a shared one, which is good for the relationship too. See keeping your marriage strong through IVF.
Don't try to change everything at once
The fastest way to fail is to overhaul your whole life in a single week. Prioritise instead:
- First: smoking — the highest-value change.
- Next: alcohol — cut back or pause.
- Then: fine-tune caffeine to a sensible total.
- Alongside: sleep, balanced eating, and sensible movement.
Change one or two things, let them settle into normal life, then add the next. Sustainable beats perfect.
A word on guilt
Resist the trap of blaming a past coffee or an old glass of wine for a difficult result. Fertility is complex and rarely traceable to a single habit. Make sensible changes going forward, and let go of the retrospective self-blame — it helps nothing and costs a lot.
The bottom line
Keep caffeine moderate, cut back or pause alcohol, prioritise quitting smoking, and make changes as a couple. Do it gradually, follow your clinic's specific advice over any general figure, and drop the guilt about the past. A few sensible, sustainable adjustments are worth far more than a punishing overhaul you can't maintain.
Frequently asked questions
Do I have to give up coffee and chai completely?
Generally no. Moderate caffeine — commonly framed as up to around 200mg a day, roughly one to two cups of coffee or a couple of cups of tea — is widely considered acceptable. The key is watching the total, since chai, filter coffee, colas, energy drinks, and chocolate all add to it. Your own clinic may give you a specific number; follow that over any general figure.
Is any amount of alcohol safe while trying?
Alcohol is one habit where cutting back clearly makes sense, and many people choose to stop entirely while actively trying or in treatment — particularly because you may be in an early pregnancy without knowing it, where the guidance is to avoid alcohol. This is a good thing to discuss with your doctor for advice specific to your situation rather than relying on general rules.
How bad is smoking, really?
This is the one habit with the least ambiguity: smoking is genuinely harmful to fertility for both partners and is worth stopping as a priority. The same caution applies to vaping and to second-hand smoke. If quitting feels impossible alone, ask your doctor — structured support makes a real difference and there's no shame in needing it.
What about my partner's habits — does it only matter for the woman?
No. Both partners' habits matter. Smoking, heavy drinking, and other lifestyle factors can affect sperm as well as eggs and cycles. Approaching changes together — quitting smoking as a team, cutting back on alcohol jointly — is both fairer and more likely to stick.
I'm being told to change everything at once and it's overwhelming. Help?
Don't try to overhaul your whole life in a week — that usually collapses. Prioritise: smoking first, then alcohol, then fine-tuning caffeine, with sleep and movement alongside. Change one or two things at a time, let them become normal, then add the next. Progress beats a perfect plan you abandon.