In Kali-yuga, the duration of life is shortened not so much because of insufficient food but because of irregular habits. By keeping regular habits and eating simple food, any man can maintain his health. Overeating, over-sense gratification, overdependence on another’s mercy, and artificial standards of living sap the very vitality of human energy. Therefore the duration of life is shortened.
There are different types of sense-gratificatory diversions, such as cinemas, sports, gambling, clubs, mundane libraries, bad association, smoking, drinking, cheating, pilfering, bickerings, and so on. Their minds are always disturbed and full of anxieties due to so many different engagements. In this age, there are men who manufacture their own religious faiths which are not based on any revealed scriptures, and very often people who are addicted to sense gratification are attracted by such institutions. Consequently, in the name of religion so many sinful acts are being carried on that the people in general have neither peace of mind nor health of body.
Ref >> Srila Prabhupada Vani.