Scientific literature confirms that exposure to cold temperatures stimulates non-shivering thermogenesis and activates brown and beige adipose tissue, which increases energy expenditure.
The retrieved papers consistently report that cold exposure activates brown and beige adipose tissue, leading to non-shivering thermogenesis and increased energy expenditure. While some papers caution that the quantitative impact on actual weight loss in humans may be small or difficult to sustain as a standalone obesity treatment, none of the sources refute the core physiological mechanism that cold exposure increases energy expenditure through thermogenesis. Therefore, the claim is supported.