Complex sentence: Vegetables such as cabbages, cauliflower and broccoli are known to increase levels of CYP1A2, lower levels of CYP1A2 in South Asians appears to be due to cooking these vegetables in curries using ingredients such as cumin and turmeric, ingredients known to inhibit the enzyme.
Split into simpler sentences: Vegetables such as cabbages, cauliflower and broccoli are known to increase levels of CYP1A2. Lower levels of CYP1A2 in South Asians appears to be due to cooking these vegetables in curries using ingredients such as cumin and turmeric, ingredients known to inhibit the enzyme.