The short explanation
Keto is a very low carbohydrate, high fat diet. Many people do lose weight quickly on it at first, partly because the body loses stored water and partly because cutting out rice, roti, sugar and snacks reduces total calories. Some people find it helps with appetite and blood sugar in the short term. But it is hard to follow long term, especially with Indian vegetarian eating, and weight often returns when people stop. It can cause tiredness, constipation, bad breath, headaches and irritability at the start, and it can raise cholesterol in some people. It is not suitable for everyone, including people with kidney disease, those on certain diabetes medicines, pregnant or breastfeeding women, and anyone with a history of eating disorders. A balanced, moderately reduced diet that you can keep up is often just as effective over time.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- If you are on diabetes or blood pressure medicines, a sudden diet change can make sugar or blood pressure drop too low, so speak to your doctor first.
- Keto meals bought from apps or diet companies can be expensive and heavily processed.
- What works best is usually a pattern you can sustain for years, not months.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you whether keto is right or safe for you. A doctor or dietitian can advise based on your health, medicines and goals.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Is a low-carb diet safe for me with my health conditions?
- Should I check cholesterol, kidney function or sugar before starting?
- What is a realistic eating plan I can maintain?
- Can I meet a dietitian?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Get help the same day
- Get care the same day if you feel very dizzy, confused, have a racing heart or persistent vomiting on a diet.
Raise it at a routine appointment
- Book a routine appointment if you want help choosing a diet that suits you.
Sources
The evidence this explanation is built on.
- Weight control MedlinePlus (US National Library of Medicine)
- Healthy diet World Health Organization
- Vegetarian diet MedlinePlus (US National Library of Medicine)
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
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