Supplements can have side effects, just like medications can. Genetic diversity helped some survive the Plague. Similarly, there's always a small subset who have a reaction to specific substances within the body for the same sort of reasons. Always fun trying to figure out if it is a side effect or due to something else.
webmd said...
Turmeric usually does not cause significant side effects. But some people can experience stomach upset, nausea, dizziness, or diarrhea.
In one report, a person who took very high amounts of turmeric, over 1500 mg twice daily, experienced a dangerous abnormal heart rhythm. However, it is unclear if turmeric was the actual cause of this side effect. Until more is known, avoid taking excessively large doses of turmeric.
Gallbladder problems: Turmeric can make gallbladder problems worse. Do not use turmeric if you have gallstones or a bile duct obstruction.
Bleeding problems: Taking turmeric might slow blood clotting. This might increase the risk of bruising and bleeding in people with bleeding disorders.
Diabetes: Curcumin, a chemical in turmeric, might decrease blood sugar in people with diabetes. Use with caution in people with diabetes as it might make blood sugar too low.
A stomach disorder called gastroesophageal reflux disease (GERD): Turmeric can cause stomach upset in some people. It might make stomach problems such as GERD worse. Do not take turmeric if it worsens symptoms of GERD.
Hormone-sensitive condition such as breast cancer, uterine cancer, ovarian cancer, endometriosis, or uterine fibroids: Turmeric contains a chemical called curcumin, which might act like the hormone estrogen. In theory, turmeric might make hormone-sensitive conditions worse. However, some research shows that turmeric reduces the effects of estrogen in some hormone-sensitive cancer cells. Therefore, turmeric might have beneficial effects on hormone-sensitive conditions. Until more is known, use cautiously if you have a condition that might be made worse by exposure to hormones.
Infertility: Turmeric might lower testosterone levels and decrease sperm movement when taken by mouth by men. This might reduce fertility. Turmeric should be used cautiously by people trying to have a baby.
Iron deficiency: Taking high amounts of turmeric might prevent the absorption of iron. Turmeric should be used with caution in people with iron deficiency.
Surgery: Turmeric might slow blood clotting. It might cause extra bleeding during and after surgery. Stop using turmeric at least 2 weeks before a scheduled surgery.
/www.webmd.com/vitamins/ai/ingredientmono-662/turmeric