Why Am I So Cold After Gastric Sleeve?

Reaching for a sweater when everyone else is fine? Feeling cold is one of the changes people often notice in the first months after a gastric sleeve. It can be surprising, especially in a Toronto winter, but it is common and there is a lot you can do about it.

Why it happens

• You eat much less than before. Digesting food produces heat, so smaller meals mean a little less warmth.
• You lose fat under the skin, which works as insulation.
• Your body adapts to a lower energy intake, and your metabolism adjusts with it.
• If you drink too little, or miss protein, you can feel more tired and colder.

Is it something to worry about?

Usually not. For most people it eases as their weight settles and their eating becomes more regular, often over the first one to two years. It is still worth mentioning at your follow-⁠ups, because some causes are easy to check and treat.

What helps

• Warm drinks count toward your fluids. Herbal tea or warm water, sipped slowly between meals.
• Warm meals such as soups and stews, in the portions and textures your stage allows.
• Layers: a base layer, a warm hat, socks and gloves in winter.
• Moving more. Walking builds up warmth and helps your circulation.
• A warm shower or bath when you feel chilled.
• Your protein, vitamins and fluids every day, as your dietitian set them.

Your bloodwork

At 360 Sleeve, bloodwork is part of your aftercare at six months and then every year. If you feel unusually cold between those checks, tell your nurse or dietitian. They can look at your intake and decide with you whether earlier bloodwork makes sense.