"Bacterial overgrowth in the small intestine can be caused by hypothyroidism (Lauritano, et al., 2007), and the substances produced by these bacteria can damage the lining of the small intestine, causing the loss of lactase enzymes (Walshe, et al., 1990).
Another hormonal condition that probably contributes to lactase deficiency is progesterone deficiency, since a synthetic progestin has been found to increase the enzyme (Nagpaul, et al., 1990). The particular progestin they used lacks many of progesterone's effects, but it does protect against some kinds of stress, including high estrogen and cortisol. This suggests that stress, with its increased ratio of estrogen and cortisol to progesterone, might commonly cause the enzyme to decrease."
He goes on to add:
Once these issues are overcome, the addition of small amounts of milk can provoke the intestine to once again secrete the lactase enzyme:
"When a group of lactase deficient people have been given some milk every day for a few weeks, they have adapted, for example with tests showing that much less hydrogen gas was produced from lactose by intestinal bacteria after they had adapted (Pribila, et al., 2000)."
A week and a bit ago I chose doxycycline from the tetracycline group of antibiotics. I started by taking 1 per day, in the evening, after food. The first evening, after taking 1 capsule, I felt pretty weird! Hard to pinpoint why (and I’m often pretty weird anyway!) but I just felt weird. I slept pretty well (all night again for approx. 6 ½ hours) but felt very sick the following morning. Yuk! I was maybe guessing that I just didn’t eat enough whilst taking it so I endeavoured to eat more the next day. I had lost a large chunk of my calories from not having coffee anymore (as I just couldn’t tolerate the milk and I didn’t like coffee without it!) so I needed to add something sweet after my meals. I decided to go for meringue nests, strawberries, sugar and cream! Yum! I added this after 2 or 3 of my meals and by that evening I was feeling much better. I had no bowel movement that day (probably because I’d had such a rough day the day before, after my yoghurt shenanigans, and I don’t think there was much left inside!!!) I took another antibiotic that evening (in for a penny and all that!) but was fine the next morning. I had a great, pleasantly firm bowel movement after breakfast, and felt pretty pleased with life!! Haha!
Feel free to add any comments, thoughts, questions, stories, whathaveyou (!) down below. I always love hearing from others. I really believe that through sharing our stories we get to move forward in ways that we wouldn’t necessarily think of just by ourselves. Take care x