and dr. segal what the problem is, there are many problems and first is that making antibiotics is not profitable from a business point of view because you don't use them every day the way you would use other medications and only need them if you get sick. and doctors are overprescribing antibiotics because people come in and pressure us, somebody like david asman comes in, i've got a cold, i've got a cold. give me a z-pack, give me a z-pack and doctors capitulate and most of us know that 95% of upper respiratory infections are viral. third problem, the 80% of the antibiotics are given to animals that we're raising, you know, for meat and giving them low doses of antibiotics which breeds resistent bacteria. if a bacteria sees an antibiotic, it tries to survive. well, millions of colonies eventually, the collies survive that are resistent to the antibiotics. fleming said that, who actually discovered penicillin said that back in 1945, alexander fleming when they gave him the nobel prize, he says the

dr michael segal, a professor at boston university's school of public health studied tobacco and smoking for 25 years. we know chantix has effects on the neurotransmitters of the brain, affecting serra tonin. it is known to be involved in mental illnesses and depression. it's not surprising that a drug like chantix could have effect on personality and could lead to depression and suicidally. >> a probe bit the food and drug admission in 2006, chantix users reported troubling side effect. some of the cases detailed in this report are bizarre, others chilling. a 24-year-old woman woke up a sleeping boyfriend and beat him because he looked too peaceful. a 42-year-old man walked up to a stranger in a bowling alley and punched him. another man choked his wife and hung himself. >> thomas moore a senior researcher with the institute for self medicine practices studied these and other acts linked to chantix. he was a consultant to lawyers sueses pfizer over the side effects. >> the cases had three striking characteristics - the violence was unpredictable and senseless. the victim was anybody who

dr. segal is here, i don't like it. okay? million adults should take a factory made pill once a day, every day for the rest of their lives? convince me that i want to do this? >> first of all, stuart, let's start with the fact when it comes to preventive medicine, you're in the dark ages. you don't believe in flu vaccines and i have to convince you and i want viewers to know that you're in the dark ages. i don't like guidelines in aga general because i don't want doctors to practice cookbook medicine, the previous guidelines is the number, how high is your cholesterol, when it's a certain number, if you're going to have guidelines, the american college of cardiology are saying let's look at risk factors. do your parents have heart disease. do you have high blood pressure. are you male, do you have high cholesterol, do you have diabetes and smoke, the more risk factors you have, the more we should consider you for the drugs because they prevent plaque from forming in coronary arteries up to 700,000 people a year are dying in h

dr. mark segal. a professor of medicine at the nyu medical center. this mean that our own bodies might hold the key to a cure? >> it could be the billion dollar, trillion dollar treatment. using the tumor itself to kill the cancer. it could be game changing. early clinical trials have been impressive. >> after we remove the tumor we are able to take that tumor, introduce that tumor to the patient as many as own immune system and the patient's own immune system fights that tumor. >> patients have seen their survival time more than doubled. the final studies for rain and prostate cancer are being held all over the country. it's cost effective compared with earlier vaccines and the side effects especially when compared to standard treatments are minimal. martha: it's a homeopathic idea and it seems to be working for real patients. >> so far so good. dan gray has battled colon cancer with traditional treatments. he says there is no comparison. >> it has no side effects. i get two injections at one go, and it's easier than having a flu vaccine. >> he even

dr. michael segal, doctor at boston university's department of public health. >> we know that chantix has effects on the neurotransmitters in the brain. it's not surprising that a drug like chantix could have effects on bernlt and have effects on -- personality and have effects on suicidality. >> adverse effects associated with chantix. my investigation right here tomorrow night on america tonight. >>> still to come, our 35th president 50 years after his assassination. what legacy did john f. kennedy leave behind? >> from our headquarters in new york, here are the headlines this hour. >> al jazeera america is the only news channel that brings you live news at the top of every hour. >> a deal in the senate may be at hand and just in the nick of time. >> thousands of new yorkers are marching in solidarity. >> we're following multiple developments on syria at this hour. >> every hour from reporters stationed around the world and across the country. >> only on al jazeera america. the stream is uniquely interactive television. in fact, we depend on you, your ideas, your concerns. >> all these

dr. michael segal, doctor at boston university's department of public health. >> we know that chantix has effects on the neurotransmitters in the brain. it's not surprising that a drug like chantix could have effects on bernlt and have effects on -- personality and have effects on suicidality. >> adverse effects associated with chantix. my investigation right here tomorrow night on america tonight. >>> still to come, our 35th president 50 years after his assassination. what legacy did john f. kennedy leave behind? >> friday, marks the 50th anniversary of president john f. kennedy's assassination in dallas, texas. kennedy is remembered of course for the historic manner in which he died. no one will forget where they were at that time. but we wanted to take a look at the momentous things he did before he died. five months before, kennedy gave a stirring civil rights speech from his office, that would be the groundbreaking civil rights act, and how kennedy came to make that speech and because many say he was reluctant to embrace. >> i could understand that martyrdom sort of elevates anyone.

dr. michael segal, doctor at boston university's department of public health. >> we know that chantix has effects on the neurotransmitters in the brain. it's not surprising that a drug like chantix could have effects on bernlt and have effects on -- personality and have effects on suicidality. >> adverse effects associated with chantix. my investigation right here tomorrow night on america tonight. >>> still to come, our 35th president 50 years after his assassination. what legacy did john f. kennedy leave behind? determining using some sort of subjective interpretation of their policy as to whether or not your particular report was actually abusive, because if it doesn't contain language that specifically threatens you directly or is targeted towards you specifically, they may not consider it abuse. they may consider it offensive. and in that case they just recommend that you block that person. >> i don't want to minimise this, because i mean, there's some really horrible things that are on line, and it's not - it's not just twitter, what has happened through social media and the anonymi

dr. michael segal has studies tobacco in smoking for 25 years. >> we know that chantix has effects on theeuroow transmitters in the brain. seso it is not surprising that a drug like chantix could have effects on personality, and could lead to depression, and suicide. >> in 26, chantix users began reporting troubling side effects almost immediately. some of the cases are bizarre, others are down right himming. a 24-year-old woman woke up her sleeping boyfriend, and started beating him because he looked too peaceful. a 42-year-old man walked up to a stranger in a bowling alley and suddenly punched him. and another man, choked his wife, then hung himself. thomas moore a senior researcher with the institute for safe medication practices, studying these and other violent acts reportedly limpinged to chantix. he was also a consultant to lawyers suing the drugs manufacturer, pfizer over those side effects. >> these cases had three striking characteristics. first, the violence was absolutely unpredictable and senseless. second, the victim was just anybody who happened to be nearby. it could have

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dr. michael segal, a professor at boston university school of public health has studied tobacco and smokings. >> we know that chantix has effects on the neurotransmitters in the brain, so it's not surprising that a drug like chantix could have effects on personality and could lead to depression and suicidalty. >> pfizer, the drug company that manufactures chantix played close to $300 million to settle most of the 2700 lawsuits filed against the company over chantix suicides and other serious side effects. pfizer declined to sit down with us for this story. in a statement, the company said: tina says her life is finally back to normal. she turned down a settlement offer from pfizer so she could keep speaking out against chantix. >> i'm very fortunate that i'm ok, and i'm living a great life right now and that that's behind me. it could have turned out much differently. i could have been like many of the other people that have taken chantix and killed themselves, or hurt somebody else. >> you can see more of the investigative reports on america tonight airing weeknights at 9:00 eastern right