This clearly refers to the Inanna cult. This cult must have been the precursor of illicit and out of marriage relationships which seemed to be widespread in the Middle East and southern Europe. Take a look at the Code of Assura c.1075 BCE in this link:- http://www.fordham.edu/halsall/ancient/1075assyriancode.asp
Most of what is mentioned in this link pertains to extra marital affairs. Such a thing was impossible in the Hindu society. In ancient India, a man may have married many women but not another man's wife. Ramayana and Mahabharata occurred mainly because married woman was harmed with sexual intentions. Even Thiruvalluvar devotes a chapter on the dharma of 'not eying another man's wife'. In the case of women, it was complete loyalty to the husband.
Man - woman relationship is very important and must be guided not just by emotions but by brains due to its impact on progeny. The prohibition on same Gotra marriage in Hindu society must be viewed from this angle. Any violation of moral code in man- woman behaviour is bound to impact what is going to be passed on to the next generation. Arjuna's refusal to go on war with the Kauravas at the last minute was more guided by his concern for what would happen to the war widows as they would become easy lays for other men. Such was the intense thought and concern given to the probable impact of immoral ways of sexual relationship.
The purport behind this guarded behaviour is precisely that the diseases that occur due to violation of Dharma would not occur. Jupiter was the indicator of Dharma, fertility and disease free progeny. It must be noted that the diseases mentioned in the study are all related to Jupiter's significances namely reproduction, cell multiplication and fat accumulation. Such disease would not occur if one follows a code of conduct of fidelity and single marriage.
To quote a note from Karma Vipaka which tells about which disease is caused by what karma, blood cancer is caused by illicit relationship with a widow. This can be expanded in today's world to include rape and extra marital affairs and any kind of violation outside marriage bond. This karma is Jupiter related – that means connected with morality. When immoral ways are followed, they have to be cleansed by disease. The genetic defect that causes blood cancer gets into the person due to the karma he carries along.
Yet another medical issue of the people of the west is that they are more prone to auto immune diseases. Sun is the factor which is related to this. Until 3000 years ago, there was worship of Omphalos (Om- Phallus = Shiva linga) throughout Europe. https://www.google.co.in/search?q=Omphalos&hl=en&tbo=u&tbm=isch&source=univ&sa=X&ei=FK-3UNq6EonKrAfX24HABw&ved=0CEAQsAQ&biw=1366&bih=612