Dr. Karan Rajan

speaker

2,601 appearances 14 recordings 1 series first heard May 2026 last heard 7 Sep

Dr. Karan Rajan’s voice in public audio — every appearance, attributed to the second.

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recordings per month · last 12 months

Recordings per month over the last 12 months — 14 in all, peaking in Jun 2026 with 5.

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Dr Karan Explores · Weight Loss Surgeon: Why Exercise and Calorie Cutting Doesn’t Work | Dr Andrew Jenkinson · 20 Jul 2026 podcast

No.

You talk a lot about in in your book about the the set point of your body fat and weight.

And I've you know seen that phrase talked about a lot.

I guess, you know, almost like a thermostat.

If you set the thermostat and temperature of the room at twenty degrees

If it drops below twenty for whatever reason, the heat will kick back in.

If it goes too high, it will go back down.

There's like some auto-regulation which happens.

So I guess similar to the Hadza tribe and these, you know, city dwellers, the Hadza tribe are exercising a lot more, so there's a lot more calories potentially burnt.

So the body tries to pull that back and claw it back to preserve as much energy by dropping the blood pressure, dropping the heart rate, making them colder.

those sort of things.

And I guess there's that same philosophy is also applying to weight loss as well.

If someone is, for example, if I'm trying to chronically restrict my calories in an attempt to lose weight, my body's going to assume I'm in some sort of famine hunger state and try to cling on to energy reserves and make further weight loss increasingly harder.

So that's why it becomes harder to lose weight and also why you might

weight bounce back and yo-yo to weight gain because your body's in that sort of you know worried energy deficit state.

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