Heavy Lifting and Weight Training

Heavy lifting — whether occupational, from moving furniture, or from weight training — increases pressure inside the abdomen in a way that’s mechanically similar to straining during a bowel movement, which is why it’s a recognized, if often overlooked, contributor to hemorrhoid risk.

Key takeaways

Lifting heavy loads, especially with breath-holding (the Valsalva maneuver), increases intra-abdominal pressure in a way that can contribute to hemorrhoid symptoms over time.
This doesn’t mean lifting or weight training needs to be avoided — proper breathing technique and gradual progression can reduce the strain involved.
Existing hemorrhoids can flare with heavy lifting even if lifting isn’t the original cause.

Why this happens

Lifting a heavy load, particularly while holding your breath and bracing (the Valsalva maneuver, commonly used in weightlifting to stabilize the spine), sharply increases pressure within the abdomen and pelvis. This pressure is transmitted to the same venous structures involved in hemorrhoid formation, similar to straining during a bowel movement, just from a different activity.

Who this is most relevant to

People with physically demanding jobs involving frequent heavy lifting
Regular weightlifters, particularly those doing heavy compound lifts (squats, deadlifts) that involve significant intra-abdominal pressure
Anyone with existing hemorrhoids, for whom heavy lifting can trigger a flare even if lifting wasn’t the original cause

This doesn’t mean you need to stop lifting

Lifting and weight training have substantial health benefits, and the goal here isn’t to avoid them — it’s to manage the specific mechanism that contributes to hemorrhoid risk:

Exhale during the exertion phase of a lift rather than holding your breath throughout, where your training goals and safety allow for it — this is a common coaching cue for good reason beyond hemorrhoid risk alone
Progress load gradually rather than jumping to very heavy weights suddenly
Address any existing constipation separately, since combining straining from both lifting and bowel movements compounds the pressure on the same tissue
Take breaks from lifting during an active hemorrhoid flare, similar to how you’d modify training around any other symptomatic injury, and resume as symptoms improve

When to see a doctor

New or worsening hemorrhoid symptoms that seem clearly tied to a change in lifting routine
Any bleeding or pain that doesn’t improve with typical self-care and activity modification

Sitting for long periods at work instead? See Desk jobs and prolonged sitting.

This page is for general education and isn’t a substitute for guidance from a doctor or qualified trainer about safe lifting technique.