Open Instagram and you'll find a thousand things promising to boost your fertility — from special teas to obscure superfoods to supplements you've never heard of. Most of them have no published evidence. Some are actively harmful. Here are the five things that consistently do improve fertility in clinical studies, regardless of the diagnosis you're starting with.
Both partners should read this. Male fertility is just as responsive to lifestyle as female fertility, and the changes that help one usually help the other.
1. Reach (and maintain) a healthy weight
The single change with the largest evidence base. Body weight directly affects hormones — both excess body fat and excess thinness disrupt the hormonal signals that regulate ovulation and sperm production.
- For women with a BMI above 30: a 5–10% weight reduction restores ovulation in many cases. For women with PCOS, this is often the single most powerful intervention.
- For women with a BMI below 18.5: gaining a few kilograms often restores cycles.
- For men with a BMI above 30: sperm count, motility and morphology all improve with weight loss. Excess fat also raises oestrogen levels, which suppresses testosterone.
You don't need to reach an "ideal" weight to see benefits. Modest, sustained change in the right direction is more effective than dramatic short-term diets.
2. Stop smoking. All forms. Both partners.
Smoking is the most clearly harmful single behaviour for fertility, and the evidence is unequivocal.
- Female smokers reach menopause 1–4 years earlier than non-smokers.
- Smoking damages oocyte (egg) DNA — directly contributing to lower IVF success.
- Male smokers have 23% lower sperm concentration and significantly higher rates of sperm DNA fragmentation.
- Passive smoking has measurable effects too.
This includes chewing tobacco, gutka, and vaping/e-cigarettes — there is no "safe" tobacco product for fertility. The good news: fertility partially recovers within a few months of stopping, especially in men.
3. Eat a Mediterranean-style diet
Of every dietary pattern studied, the Mediterranean-style eating pattern has the most consistent positive association with fertility outcomes — including better IVF success rates. What it actually looks like:
- More of: vegetables, fruits, whole grains, legumes (dal, beans, chickpeas), nuts and seeds, olive oil, oily fish (when accessible), full-fat dairy in moderation, eggs.
- Less of: processed foods, sugary drinks, refined carbohydrates (white bread, white rice, sugar), trans fats, deeply fried foods, processed meats.
Specific Indian-friendly translations: more sabzi, more dal, more whole-grain rotis (jowar, bajra, ragi), more sprouts, more curd, less Maida, less sweets, less deep-fried, less processed snacks. Folic acid (400-800 μg/day) is a separate recommendation for women trying to conceive — it reduces neural tube defect risk in the early pregnancy.
4. Sleep 7-9 hours, and protect it
Underrated. Sleep affects reproductive hormones directly. Shift workers and chronic short-sleepers have measurably lower fertility, including lower sperm quality in men and disrupted ovulation in women. Two-thirds of the people who walk into my clinic with "unexplained infertility" report poor sleep.
- Aim for 7-9 hours nightly.
- Consistent sleep timing matters more than the exact number — get up and sleep at roughly the same times.
- Reduce screen exposure 30-45 minutes before bed.
- If you have suspected sleep apnea (heavy snoring, gasping, daytime exhaustion), get it evaluated — it has direct fertility consequences.
5. Limit alcohol — and reconsider it entirely when trying to conceive
Light-to-moderate alcohol in non-pregnant women has unclear effects on fertility. Heavy alcohol use clearly impairs fertility in both sexes. And for women actively trying to conceive, there's no safe amount of alcohol during early pregnancy — which is exactly the period before you know you're pregnant.
Pragmatic advice:
- Women trying to conceive: ideally stop altogether. At minimum, avoid alcohol in the second half of your cycle when implantation could occur.
- Men: heavy drinking lowers testosterone and sperm quality. 2-3 alcohol-free days per week and no more than 1-2 drinks otherwise.
- During IVF cycles: both partners avoid alcohol completely from cycle start through pregnancy.
What about stress?
Stress reduction comes up a lot in fertility advice — and "just relax" is genuinely unhelpful when you've been trying for years. The honest answer: chronic high stress affects hormones, sleep and behaviours that affect fertility, so reducing it helps indirectly. Yoga, walking, meditation, counselling, time with people you love — whatever works for you. Don't add "you're not relaxed enough" to the list of things you're failing at.
What I'd skip
- Most fertility supplements sold direct to consumers. Evidence is weak for most. Coenzyme Q10, vitamin D (if deficient), and folic acid (for women) have some support — others have minimal.
- Detox programs. Your liver and kidneys do this for you. Save the money.
- Restrictive elimination diets without a medical reason. The stress and nutritional risk outweigh hypothetical benefit.
- Acupuncture as a guarantee. Small studies show some benefit alongside IVF, particularly for stress — but as a treatment in itself, evidence is weak.
The realistic timeline
Egg quality reflects choices made 3-4 months prior. Sperm quality reflects the last 2-3 months. So lifestyle changes need 2-3 months minimum before measurable effect. If you're planning fertility treatment, start the lifestyle work alongside or just before — not "after this cycle".
None of this replaces medical evaluation. If you've been trying for 12 months (or 6 if you're over 35), lifestyle alone may not be enough — but pursued alongside good medical care, it makes everything else work better.
