Intermittent Fasting Questions & Answers

Should I fast on days when I'm sick with a cold, or will it slow my recovery?

Wondering whether to keep fasting when you get a cold? Here's what happens when you fast while sick and the practical guidance most people need to hear.

I lost weight but my body fat percentage barely changed. Why?

Lost weight but your body fat percentage looks the same? This is common and explainable. Here's what's actually happening and what to do about it.

Has anyone used fasting to recover from COVID long-haul symptoms?

Exploring whether intermittent fasting can support recovery from long COVID symptoms like fatigue, brain fog, and inflammation based on what we know.

My calves cramp badly at night since I started fasting. Is this an electrolyte issue?

Painful night cramps after starting intermittent fasting are almost always caused by low magnesium and potassium — here's how to fix them quickly.

I feel incredible after a 48-hour fast but not sure if it's healthy to do this regularly. Thoughts?

A 48-hour fast can produce powerful benefits, but doing it regularly requires careful consideration. Here's what happens and how often is safe.

Can someone with a history of gallstones do intermittent fasting safely?

People with a history of gallstones can often fast safely, but extended fasts and rapid weight loss carry specific risks. Here's what you need to know before starting.

I started fasting and my menstrual cycle became irregular. Has this happened to you?

Irregular periods after starting intermittent fasting is more common than you'd think. Here's why it happens, when to be concerned, and how to fix it.

Does apple cider vinegar break a fast? I've seen very different answers online.

Apple cider vinegar has almost no calories, but does it break a fast? Here's a clear answer on ACV, insulin response, and when to use it during intermittent fasting.

Can fasting help with hormonal belly fat after menopause?

Hormonal belly fat after menopause is driven by falling estrogen and rising insulin resistance. Intermittent fasting targets both — here's what to realistically expect.

I lost weight the first month then gained 2kg back while doing the same thing. What happened?

Gaining a little weight back after early fasting success is extremely common and usually has a straightforward explanation. Here's what's happening and what to do.

How do you fast when your job requires you to socialize over lunch every day?

Work lunches don't have to derail your intermittent fasting. Here are practical strategies to stay on your fasting schedule while maintaining professional relationships.

Does it matter if my eating window changes by an hour or two each day, or does it need to be exact?

Can your fasting window shift by an hour or two without ruining your results? Here's what actually matters when it comes to eating window consistency on IF.

My breath smells terrible when I'm fasting. Is this just ketosis and will it ever go away?

Bad breath during fasting is a real and common experience. Here's exactly what causes it, whether it's a good sign, and what you can do to minimise it.

I feel euphoric and almost high when deep in a fast. Is this normal and what causes it?

That euphoric feeling during deep fasting is real and well-documented. Ketones, BDNF, norepinephrine, and falling inflammation all contribute to the 'fasting high.'

Can I do intermittent fasting if I have an underactive thyroid (hypothyroidism)?

Hypothyroidism doesn't rule out intermittent fasting, but the approach matters. Here's what to know about fasting, thyroid hormones, and medication timing.

I'm 65 and my doctor says fasting is risky at my age. Is this true?

Is intermittent fasting safe for people over 65? What the research shows about fasting risks for older adults, and how to approach it sensibly with a doctor's guidance.

Has anyone used fasting to get off blood pressure medication? What was your experience?

Many people have used intermittent fasting to reduce or eliminate blood pressure medication — here's what the research shows and what to expect from the process.

Does the type of exercise matter when fasting — cardio vs. weights?

Cardio and strength training work differently during a fast. Here's how each affects fat loss, muscle retention, and energy when you're in a fasted state.

My sleep is much worse since I started fasting — I wake up at 3am every night. What's going on?

Waking at 3am after starting intermittent fasting is common and usually has a fixable cause. Here's what's likely happening and how to get your sleep back on track.

I drink 3L of water during my fast but still feel dehydrated. What's happening?

Drinking lots of water while fasting but still feeling dehydrated is an electrolyte issue, not a hydration issue. Here's what's happening and how to fix it.

Does stress eating get better with fasting, or does fasting make it worse?

Fasting can reduce stress eating over time by stabilising blood sugar and insulin — but the early weeks may feel harder before they get easier.

Can intermittent fasting help with inflammation from arthritis?

Intermittent fasting reduces pro-inflammatory markers and may ease arthritis symptoms. Here's what the research shows and what to realistically expect.

What is the best way to break a 24-hour fast without feeling sick?

Breaking a 24-hour fast correctly prevents nausea and stomach pain. Start light, eat slowly, and avoid the common mistake of rushing a large meal.

I feel worse on fasting days than non-fasting days. Is that normal at the beginning?

Feeling worse when fasting in the first 1-2 weeks is common and expected. Here's what causes it, how long it lasts, and how to get through it faster.

Can I have a small handful of nuts during my fast if I'm really struggling? Will it ruin everything?

Wondering if a few nuts during your fasting window will break your fast? Here's what actually happens and what you should do instead.

Does drinking decaf coffee have the same benefits as regular coffee during fasting?

Decaf coffee won't break your fast, but it misses some of the specific metabolic benefits that caffeine provides. Here's the honest breakdown.

Can fasting cause constipation? Mine has been really bad since I started.

Constipation is common when starting intermittent fasting. Here's why it happens, what causes it, and practical steps to fix it without stopping your fast.

I've been doing 18:6 for 4 months with no results. Should I switch to OMAD?

Four months of 18:6 with no results usually points to a food quality problem, not a fasting window problem. Here's how to diagnose what's actually happening before switching.

Has anyone reversed pre-diabetes with intermittent fasting alone, without medication?

Yes — many people have reversed pre-diabetes markers using intermittent fasting alone. Here's what the evidence says and what timelines to expect.

I feel great but my BMI is still 'obese.' Should I care about BMI or just focus on how I feel?

BMI says obese but you feel amazing — which should you trust? Here's what BMI actually measures, its limitations, and better metrics to track your progress.

My partner wants to do intermittent fasting but they have a history of anorexia. Is it safe?

Intermittent fasting and a history of anorexia require careful consideration. Here's what the evidence says and when professional guidance is essential.

I always eat healthy during my eating window but I'm not losing weight. What could be the issue?

Eating healthy during your intermittent fasting window but the scale won't move? Here are the most common reasons weight loss stalls despite clean eating.

Does black tea break a fast the same way coffee doesn't, or are they different?

Black tea and coffee behave similarly during fasting — both are low-calorie and don't meaningfully spike insulin. Here's what you need to know about black tea while fasting.

I'm a nurse doing 12-hour shifts. How do I fit fasting around a schedule that changes every week?

Fasting around 12-hour nursing shifts is possible with a flexible window approach. Here's how to adapt your fasting schedule to a rotating or unpredictable roster.

Has anyone tried fasting while pregnant? I know it's controversial but curious about experiences.

Fasting while pregnant raises real safety concerns. Here's what we know about intermittent fasting during pregnancy and why most experts advise against it.

Can intermittent fasting help with acid reflux or GERD?

Many people report significant improvement in acid reflux symptoms with intermittent fasting. Here's what the evidence says and what to watch out for.

My Blood Sugar Drops to 60 mg/dL When Fasting and I Feel Shaky. Should I Stop?

Blood sugar of 60 mg/dL with shakiness during fasting is a real signal worth taking seriously. Here's what it means and when to stop or adjust your approach.

My Skin Has Been Breaking Out Since I Started Fasting. Has This Happened to Anyone Else?

Skin breakouts in the first weeks of intermittent fasting are common and usually temporary. Here's why it happens and what to do about it.

I feel mentally sharper when fasting but my gym performance dropped. Is this a phase that passes?

Yes, reduced gym performance at the start of fasting is a normal adaptation phase. Learn why it happens and how long it lasts.

What is the difference between hunger and wanting food out of habit? How do you tell them apart?

Learn how to tell real physical hunger from habit-based food cravings during intermittent fasting — and why the difference matters for your results.

I've been fasting for 6 months and have lost 20kg. Now I want to stop losing weight — how do I maintain?

Congratulations on losing 20kg with intermittent fasting. Here's how to shift from weight loss mode to maintenance without gaining it all back.

I feel amazing fasting but my family is worried I have an eating disorder. How do I explain this to them?

Fasting can look like restriction from the outside. Here's how to have an honest, calm conversation with worried family members about intermittent fasting.

Does it matter what time of day I eat my one meal on OMAD, or can it be breakfast?

Does the time of your OMAD meal matter? Learn how meal timing affects fat burning, sleep, hormones, and results on one meal a day.

Has Anyone Successfully Fasted While on Antidepressants? Any Interactions I Should Know About?

Many people fast successfully on antidepressants, but medication timing, food requirements, and blood sugar effects vary by drug. Here's what to know.

I cheat every Friday with pizza and wine. Am I wasting all the progress from the other 6 days?

One weekly cheat night rarely undoes six days of fasting progress — but context matters. Here's an honest look at what a Friday blowout actually does.

Can I Have Electrolyte Drinks During the Fast, or Do They Break It?

Plain mineral electrolytes don't break a fast. But most commercial electrolyte drinks contain sugar or sweeteners that will. Here's what to use and what to avoid.