A new study from San Diego State University suggests that the temperature of your morning coffee could influence your mood, sleep quality, and digestive health. The research, the first in the US to directly link hot and cold food and drinks to multiple health outcomes, examined data from over 400 Asian and white American adults.
Among Asian participants, who generally preferred hot beverages, consuming more cold drinks in summer was associated with increased anxiety, sleep disturbances, and abdominal fullness. In contrast, white participants—who typically favoured cold drinks—reported lower depression levels, better sleep, and fewer digestive issues when they drank more hot beverages in winter.
The effects were most pronounced in individuals who frequently reported having cold hands, a possible indicator of reduced circulation. The researchers noted that cold hands can also be a symptom of Peripheral Artery Disease, a condition affecting one in 20 Americans over 50.
Wellness expert Jessica Mack, who was not involved in the study, told Fox News Digital that warm foods and beverages can positively impact the body's stress response, enhance circulation, and trigger the release of feel-good neurotransmitters like serotonin. The findings align with traditional Chinese and Ayurvedic medicine practices that caution against excessive cold drink consumption.
Lead author Tianying Wu emphasised the need for further research, particularly among older adults or those with poor circulation, who may be more vulnerable to cold exposure. The study was published in the journal Appetite.
