I just read a post Why am I getting lightheaded after drinking water? and was dissatisfied with an answer. What does a patient mean by describing his health as generally god? A patient is older than 50 and patient s BMI is 25, which is considered as obese. There can be different reasons for the dizziness while drinking water. But one reason, which can cause sudden death, was not mentioned. My husband felt dizzy after drinking water for several years. Cold or room temperature water- it doesn t matter. He passed out and fell on the floor after drinking several sips of water. At the hospital, he s got dizzy again while drinking water. We finally googled for this condition and found out about Swallow syncope: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC0000/#!po=28.7879 My husband was wearing Holter monitor recording his heart rate and this is why he was able to catch that his heart rate stopped for 9 seconds while he was drinking water. (Actually, medical personal missed this, and we ve got attention only when my husband asked if there was any pause in his heart beat recorded an hour ago when he was drinking water.) He was diagnosed with sick sinus syndrome (SSS) and he has got a pacemaker the next day.