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Komal Jethmalani |481 Answers |Ask -Follow

Dietician, Diabetes Expert - Answered on Feb 23, 2026

Komal Jethmalani is a practising dietician and nutritionist with over 26 years of experience.
She specialises in weight loss and diabetes management.
Jethmalani has completed her MSc in food and nutrition from SNDT University and trained at Jaslok Hospital.
She is a NDEP-certified diabetes educator.... more

Asked by Anonymous - Feb 18, 2026Hindi

I recently came across the concept of a “Japanese fruit diet,” where fruits are consumed in specific combinations or as primary meals for detoxification and weight loss. Some people claim that this approach improves metabolism and skin health. From a nutritional perspective, is relying heavily on fruits for weight management safe and sustainable? Could such a diet lead to blood sugar fluctuations or nutritional deficiencies, especially for individuals with sedentary lifestyles or prediabetes?

Ans: Fruits are nutritious, but they’re not designed to be the main source of calories long?term. Even though fruit sugar (fructose) is natural, it still affects blood sugar. A fruit?only or fruit?dominant diet may lack essential nutrients. Fruit digests quickly as well. Low protein intake affects metabolism and muscle health. Including fruit as part of a balanced diet is great but the issue arises when fruit becomes the primary food group. A fruit?heavy diet may be risky for people who are sedentary, prediabetic, diabetic,
prone to blood sugar fluctuations, older adults and those dealing with metabolic issues. These individuals may experience sharper glucose spikes and energy dips.

DISCLAIMER: The answer provided by rediffGURUS is for informational and general awareness purposes only. It is not a substitute for professional medical diagnosis or treatment.

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Question by Prakash - Mar 21, 2022Hindi

Dear Komal, Is eating overripe fruits bad for heath? Sometimes, fruits do get overripe and I don’t like throwing them away so I end up eating them because no one else in the family will. Prakash

Ans:

Overripe fruits may be still good to eat or can easily be converted into a smoothie, juice or used as an ingredient in dishes such as banana bread.

The main thing you lose when fruit ripens too much is its texture. You no longer have the plump juiciness or crunchiness.

However, more often than not, these fruits will actually be at their sweetest.

Hence, though not the best to eat as is, there's still a lot you can do with them.

Overripe fruit will smell really sweet. A rotten fruit will smell nasty, sour or similar to vinegar. This indicates that the fruit has started to ferment.

Unless you've intentionally fermented it in the right, sterile conditions, fermented fruit is not safe to eat.

High levels of the fruit sugar fructose in overripe fruits can cause digestive upsets in people with sensitive stomachs.

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