The truth about lard causes ca… See more

The understanding of whether lard causes cancer is nuanced and based on recent scientific research. One notable study in rats showed that maternal consumption of a high-fat diet based on lard during pregnancy actually reduced the risk of breast cancer development in their offspring. The study found lower tumor incidence, multiplicity, and weight, along with changes in mammary gland biology suggestive of reduced cancer susceptibility in the offspring exposed to high lard intake in utero. However, this does not imply that high lard consumption is advisable during pregnancy due to other health risks it poses.

On the other hand, other studies in obesity models indicate that high-fat diets derived from animal fats such as lard, beef tallow, and butter may impair the immune system’s ability to fight tumors and accelerate cancer growth. These fats produce blood metabolites that interfere with immune cell function, potentially promoting faster tumor progression.

In summary, the relationship between lard consumption and cancer risk depends heavily on context such as life stage, dose, genetic factors, and overall diet. While maternal high lard intake may reduce specific breast cancer risks in offspring in animal models, animal fats more broadly can impair immune responses, leading to faster tumor growth in other settings. Thus, the truth is complex, and moderation along with balanced diet composition remains key for minimizing cancer risk [1][2][6][8].

Referencias:
[1] Exposure to lard-based high-fat diet during fetal and … https://pmc.ncbi.nlm.nih.gov/articles/PMC4501406/
[2] How sources of dietary fat influence cancer growth in obesity https://www.ludwigcancerresearch.org/news-releases/how-sources-of-dietary-fat-influence-cancer-growth-in-obesity/
[3] The source of dietary fat influences anti-tumour immunity in … https://www.nature.com/articles/s42255-025-01330-w
[4] Article Dairy fat, saturated animal fat, and cancer risk https://www.sciencedirect.com/science/article/pii/009174359190022V
[5] AB015. Association between usage of cooking oils and risk of … https://jphe.amegroups.org/article/view/7948/html
[6] Animal fats impair immune response to cancer growth https://newatlas.com/cancer/obesity-cancer-fat/
[7] The effects of a diet with high fat content from lard on … https://pmc.ncbi.nlm.nih.gov/articles/PMC11297511/
[8] Different sources of dietary fat may influence cancer risk in … https://www.ucd.ie/conway/engagement/newsopinion/2025/differentsourcesofdietaryfatmayinfluencecancerriskinobesity/